Identify the intervals where the function is changing as requested.Constant
A. (1, 2)
B. (2, ?)
C. (-2, -1)
D. (-1, 1)
Answer: D
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Write the expression with only positive exponents and evaluate if possible. Assume all variables represent nonzero real numbers.
A. 
B. 
C. 
D. 
Solve the problem.The function A = Aoe-0.0099x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 700 pounds of the material are initially put into the vault, how many pounds will be left after 180 years?
A. 118 pounds B. 136 pounds C. 900 pounds D. 535 pounds
Graph the parabola.y = -x2 + 2x - 1
A. 
B. 
C. 
D. 
Solve the problem.Car A (travelling north at 30 mph) and car B (traveling west at 50 mph) are heading toward the same intersection. Car A is 3 miles from the intersection when car B is 4 miles from the intersection. Find parametric equations that describe the motion of cars A and B.
A. Car A: x = -30t + 3, y = 0; Car B: x = 4 - 50t, y = 0 B. Car A: x = 0, y = 50t - 4; Car B: x = 30t - 3, y = 0 C. Car A: x = 50t - 4, y = 0; Car B: x = 0, y = 3 - 30t D. Car A: x = 0, y = 30t - 3; Car B: x = 4 - 50t, y = 0