Exam (elaborations)
SAT MATHEMATICS LEVEL 2 PRACTICE TEST 7 WITH ANSWER KEYS AT THE END
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Exam of 17 pages for the course SAT at SAT (1. If)
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실전 81 1
1. If 𝑥 = 3+√5, what is the value 𝑥 2 ?
(A) 27.42
(B) 22.51
(C) 17.31
(D) 12.32
(E) 10.57
2. What power of 11 is equal to 3?
(A) 0.23
(B) 0.28
(C) 0.30
(D) 0.38
(E) 0.46
3. l1 and l2 are linear functions, l1: 𝑦 = −𝑏𝑥 +
1
5, l2: 𝑦 = 𝑏 𝑥 + 1. (b is positive integer).
Which of the following statements is true?
(A) l1 and l2 are perpendicular.
(B) l1 and l2 are parallel.
(C) l1 and l2 have a lot of intersection points.
(D) l1 and l2 have the same y-intercept.
(E) l1 and l2 are symmetric to the y-axis.
4. Which of the following is a vertical
𝑥+9
asymptote of 𝑓(𝑥) = 3𝑥+4 ?
(A) –9
4
(B) − 3
(C) 0
1
(D) 3
4
(E) 3
5. If cos 𝑥 = 0.82, then sec 𝑥=
(A) 0.57
(B) 0.75
(C) 1.22
(D) 1.53
(E) 1.75
1
,실전 8
6. The mean of the annual salaries of the seven
workers at company A is 42,824, and the
median of them is 46,200. The annual
salaries of the eight workers at company B
are each 44,000. Which one of the following
statements is true?
(A) The annual salary of the company A
worker who gets the highest salary is the
higher than the mean of the annual salaries
of the eight company B workers.
(B) The annual salary of the company A
worker who gets the lowest salary is the
equal than the mean of the annual salaries of
the eight company B workers.
(C) As median gets larger, mean always gets
larger.
(D) The mean and the median of B company
are different.
(E) The mean of the salaries of the company
A workers who get higher than 46,200 is
always lower than the mean of the annual
salaries of the eight company B workers.
7. What is the domain of the function 𝑓(𝑥) =
log 𝑥−1 (𝑥 2 − 2𝑥 − 3) ?
(A) 𝑥 > 3
(B) 1 < 𝑥 < 3
(C) 𝑥 <– 1
(D) 1 < 𝑥 ≤ 3
(E) 𝑥 > 3 or 𝑥 <– 1
8. If 𝑓(𝑥) = ln 𝑥 + 1, 𝑔(𝑥) = 𝑒 2𝑥 , then
𝑓(𝑔(3)) =
(A) 6
(B) 7
(C) 8
(D) 9
(E) 10
2
, 실전 8
9. If A and B are different points in a plane,
then the set of all points in this plane the
difference of whose distances from A and B
is constant is
(A) Parabola
(B) Circle
(C) Ellipse
(D) Hyperbola
(E) Line
10. If point A(2,6) and the midpoint of 𝐴𝐵 is
(–1,3), then coordinates of point B are
1 9
(A) (2 , 2)
1
(B) (1, 2)
(C) (–2,0)
(D) (–4,0)
9
(E) (− 2 , 1)
11. If 103t = 1,000,000, then t =
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
12. The 15th term of 1,2,4,7,11,… is
(A) 101
(B) 106
(C) 111
(D) 117
(E) 121
3
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