Simplify the expression, leaving your answer with only positive exponents. Assume that all variables represent positive numbers.
1/4
A. 
B. 
C. 
D. 4x2
Answer: B
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Let 
. If y is increased by 32%, how is x affected? Express your answer in terms of a percent. Round your answer to two decimal places if necessary.
?
A. x is decreased by 10.91% B. x is increased by 10.91% C. x is decreased by 8.67% D. ?x is increased by 8.67%
Evaluate the expression.[4 + (-4)] + (-5 + 8)
A. 13 B. -13 C. 3 D. 21
Find the Taylor polynomial of order 3 generated by f at a.f(x) = 
, a = 1
A. 
- 
+ 
- 
B. 
- 
+ 
- 
C. 
- 
+ 
- 
D. 
- 
+ 
- 
Write the best-fit linear model for the data.Two separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take both tests and the results are shown below. Find a linear function that approximates a student's score on Test B as a function of his or her score on Test A. 
A. y = -19.4 - 0.930x B. y = 19.4 + 0.930x C. y = -0.930 + 19.4x D. y = 0.930 - 19.4x