Simplify.
A. 
B. x2
C. -x2
D. - 
Answer: B
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If a problem begins with “There are 200 people at a dance . . .”, an approach to solving the problem may be
(a) Draw a Picture. (b) Guess and Test. (c) Solve a Simpler Problem. (d) Deductive reasoning. (e) None of these is a good approach.
Provide an appropriate response.A student wanted to estimate 21.5 × 0.0079 by first rounding each number. He solved the problem as follows.21.5 × 0.0079 is approximately equal to 
which is equal to 0.016. So he estimated the answer as 0.016. Do you agree with the answer? If not, explain where the student went wrong and give the correct answer.
What will be an ideal response?
State the quadrant in which the point lies.(-8, 0)
A. Quadrant IV B. Quadrant II C. None D. Quadrant III
Solve the problem.In a certain city, the cost of a taxi ride is computed as follows: There is a fixed charge of $2.55 as soon as you get in the taxi, to which a charge of $2.20 per mile is added. Find an equation that can be used to determine the cost, C(x), of an x-mile taxi ride.
A. C(x) = 2.20 + 2.55x B. C(x) = 4.75x C. C(x) = 3.25x D. C(x) = 2.55 + 2.20x