Express the number in scientific notation.2500
A. 2.5 × 10-2
B. 2.5 × 10-3
C. 2.5 × 103
D. 2.5 × 102
Answer: C
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Solve by graphing.The cost y (in dollars) of car rental is related to the number of miles driven x and is approximated by the linear equation y = 0.25x + 8. Graph the equation and use the graph to estimate to the nearest whole dollar the cost of car rental if the number of miles driven is 24. 
A. $19 B. $14 C. $10 D. $26
Solve the problem.A satellite dish is shaped like a parabola. The signals that are received by the dish strike the surface of the dish and are reflected to a single point, where the receiver of the dish is located. If the dish is 8 feet across at its opening and 1.3 feet deep at its center, at what position should the receiver be placed?
A. 0.6 feet from the base along the axis of symmetry B. 5.3 feet from the base along the axis of symmetry C. 4 feet from the base along the axis of symmetry D. 3 feet from the base along the axis of symmetry
Tell whether the statement is true or false.Let A = {8, 9, 10, 11, 12, 13}, B = {10, 12, 14}, C = {8, 9, 11, 13}, D = {8, 13}, and 
{0, 9, 13} ? C
A. True B. False
Solve the problem.An object is propelled vertically upward from the top of a 304-foot building. The quadratic function 
models the ball's height above the ground, 
in feet, t seconds after it was thrown. How many seconds does it take until the object finally hits the ground? Round to the nearest tenth of a second if necessary.
A. 2 seconds B. 10.8 seconds C. 1.8 seconds D. 4.5 seconds