ALEKS Math Placement Exam |Questions with Verified Answers |Latest 2024/2025
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Course
ALEKS Math Placement
Institution
ALEKS Math Placement
How to find percent of change 1) change/ original amount
2) make fraction into a decimal
3) move decimal to make it a percent.
How to graph parabola when given an equation * IN STANDARD FORM* *use y= ax² + bx + c*
1) find vertex using: x= -b/2a
2) graph vertex point
3) plug in value...
3) plug in value of vertex as x to get y coordinate
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4) find additional points by plugging in x values into the y=ax² part of
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equation
5) graph each point FROM vertex point
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how to graph parabola when given an equation * IN VERTEX FORM*
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use: y=a(x+h)² +k
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h= horizontal shift
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k= vertical shift
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1) find vertex (h,k) and graph it
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2) IF THERE IS *NO* VALUE FOR a, then go over 1, up 1
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3) go over 2 up 4 for next points
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, rules for scientific notation
_’- _’- _’- _’-_’- _’- -decimal moved to RIGHT= (-) exponent
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-decimal moved to LEFT= (+) exponent
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*don't want zeros in front of decimal*
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how to find new price given a percentage off
_’- _’- _’- _’- _’- _’- _’- _’- _’-_’- _’- 1) subtract the given
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percent by 100 _’- _’-
2) make that number into a decimal
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3) multiply decimal by amount to get new price
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ORRRR
1) change percent to a decimal
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2) multiply decimal by dollar amount
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3) subtract that amount from the old amount to see new amount
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simple interest _’- _’-_’- I= Prt
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(p= principle/ beginning amount)
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*change percent into decimal*_’- _’- _’-
Compounded Interest _’- _’-_’- _’- *use when problem says annually*
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A= P (1+r)^t
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Positive Number _’- _’-_’- _’- Any number greater than zero
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Negative Number _’- _’-_’- _’- Any number less than zero
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