Simplify the expression. Write your answer without negative exponents. Whenever an exponent is negative or zero, assume that the base is not zero.x ? x3
A. x4
B. 2x3
C. 2x4
D. x3
Answer: A
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Estimate the product by first rounding each number so that there is one nonzero digit.0.032 × 449.6
A. 12 B. 1200 C. 1.2 D. 120
Solve the problem.In a track meet, Ashley runs 400 meters in 58.5 seconds. What was her average speed in meters per second? (Round to the nearest tenth.)
A. 1.5 B. 0.1 C. 68.4 D. 6.8
Identify the exercise as either a permutation (order matters) or combination (order does not matter) counting problem. Do not actually solve the exercise.Five of a sample of 100 computers will be selected and tested. How many ways are there to make this selection?
A. Permutation B. Combination
Determine the x-coordinate(s) of any relative extrema and inflection points of the function 
.
?
A. relative minimum: 
; inflection point: 
B. no relative extrema; inflection point: 
C. relative minimum: 
; no inflection points
D. no relative extrema; inflection point: 
E. relative maximum: 
inflection point: 