Exam (elaborations)
Test Bank For Precalculus Essentials 6th Edition All Chapters - 9780137417698
- Course
- Institution
Test Bank For Precalculus Essentials 6th Edition All Chapters
[Show more]
Seller
Follow
Content preview
,Test Bank for Precalculus Essentials 6th EditionChapter 0 Prerequisites: Fundamental Concepts of Algebra
Chapter 0 Prerequisites: Fundamental Concepts of Algebra
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Evaluate the algebraic expression for the given value or values of the variable(s).
1) 8x + 5; x=7 1)
A) 112 B) 13 C) 51 D) 61
2) -5x - 9; x = -1 2)
A) 4 B) -14 C) -4 D) 14
3) 3(x + 2) + 8; x = -9 3)
A) -13 B) -40 C) 13 D) 56
4) 6x2 + 8y; x = 4 and y = 7 4)
A) 152 B) 632 C) 326 D) 1,008
5) (x + 2y)2; x = 3 and y = 4 5)
A) 11 B) 121 C) 22 D) 25
6) 6 + 6(x - 5)3; x=7 6)
A) 96 B) -42 C) 18 D) 54
7) x2 - 3(x - y); x = 8 and y = 2 7)
A) 38 B) 46 C) 42 D) -82
9(x - 7)
8) ; x=5 8)
2x + 8
9
A) -2 B) - 1 C) - D) 6
2
y - 6x
9) ; x = -2 and y = 1 9)
4x + xy
1 B) 13 11 11
A) - - C) D)
2 10 10 6
Solve.
5
10) The formula C = (F - 32) expresses the relationship between Fahrenheit temperature, F, and 10)
9
Celsius temperature, C. Use the formula to convert 104°F to its equivalent temperature on the
Celsius scale.
A) 130°C B) 8°C C) 40°C D) 76°C
11) A stone is dropped from a tower that is 760 feet high. The formula h = 760 - 16t2 describes the
stone's height above the ground, h, in feet, t seconds after it was dropped. What is the stone's height 11)
5 seconds after it is released?
A) 385 ft B) 360 ft C) 335 ft D) 370 ft
1
,Test Bank for Precalculus Essentials 6th Edition
Chapter 0 Prerequisites: Fundamental Concepts of Algebra
2
, Test Bank for Precalculus Essentials 6th Edition
Chapter 0 Prerequisites: Fundamental Concepts of Algebra
12) If a rock falls from a height of 60 meters above the ground, the height H (in meters) after x seconds 12)
can be approximated using the formula H = 60 - 4.9x2. What is the height of the rock after 2
seconds?
A) 50.2 m B) 220.4 m C) 40.4 m D) -36.04 m
13) As the relative humidity increases, the temperature seems higher than it is. The formula T = 0.118x 13)
+ 77.98 approximates the apparent temperature for an actual temperature of 85°F, where x is the
relative humidity. What is the apparent temperature (to the nearest degree) for a relative humidity
of 60%?
A) 85°F B) 138°F C) 552°F D) 78°F
14) The winning times (in seconds) in a speed-skating event for men can be represented by the formula 14)
T = 46.92 - 0.098x, where x represents the year, with x = 0 corresponding to 1920. (For example in
1992, x would be 1992 - 1920 = 72.) According to the formula, what was the winning time in 1963?
Round to the nearest hundredth.
A) 44.67 sec B) 42.71 sec C) 2,013.35 sec D) 43.69 sec
15) It is estimated that y, the number of items of a particular commodity (in millions) sold in the United 15)
States in year x, where x represents the number of years since 1990, is given by the formula
y = 1.66x + 3.92. That is, x = 0 represents 1990, x = 1 represents 1991, and so on. According to the
formula, how many items sold in 1999?
A) 50.22 millions B) 18.86 millions C) 20.52 millions D) 3.92 millions
Find the intersection of the two sets.
16) {1, 10, 4, 9} n {4, 11, 1} 16)
A) ø B) {1, 4} C) {1} D) {1, 4, 9, 10, 11}
17) {1, 3, 8} n {4, 11} 17)
A) {1, 8} B) {3, 8} C) {1, 4, 8, 3, 11} D) ø
18) {4, 6, 7, 9} nø 18)
A) {7, 9} B) {4, 6} C) ø D) {4, 6, 7, 9}
Find the union of the two sets.
19) {2, 4, 8, 11} u {2, 4, 13} 19)
A) {2, 4} B) ø C) {2, 4, 8, 11, 13} D) {8, 11, 13}
20) {2, 10} u {2, 5, 8} 20)
A) {5, 8, 10} B) ø C) {2} D) {2, 5, 8, 10}
21) {8, 10, 11, 13} u ø 21)
A) {11, 13} B) {8, 10, 11, 13} C) ø D) {8, 10}
List all numbers from the given set B that are members of the given Real Number subset.
22) B = {11, 5, -8, 0, 0.8, 9} Integers 22)
9 9
3
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller meilleurellamae373090. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $49.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79276 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now