Multiply.4 ? (-3) ? (-5) ? 5 ? (-3)
A. 900
B. -900
C. 303
D. -2
Answer: B
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Solve the problem.The expression for figuring the average speed of a car is 
, where m is the number of miles traveled and h is the number of hours traveled. Evaluate the expression for a car that travels 
in 10 hours.
A. 49 mph B. 59 mph C. 55 mph D. 590 mph
Factor the sum or difference of two cubes.216 - t3
A. (6 - t)(36 + 6t + t2) B. (6 - t)(36 + t2) C. (6 + t)(36 - t2) D. (6 + t)(36 - 6t + t2)
Solve the problem.The graph depicts a person's speed y, in miles per hour, during a 15-minute period of driving. The graph has two turning points.The first turning point is the point at which the graph stops rising and starts to fall. The second turning point is the point at which the graph stops falling and starts to rise again. Estimate and interpret the turning points.
A. The first turning point is at approximately (6, 48). This is where the person's distance from the starting point stops increasing and starts to decrease. The second turning point is at approximately 
. This is where the person's distance from the starting point stops decreasing and starts to increase again.
B. The first turning point is at approximately (5, 48). This is where the person's distance from the starting point stops increasing and starts to decrease. The second turning point is at approximately 
. This is where the person's distance from the starting point stops decreasing and starts to increase again.
C. The first turning point is at approximately (6, 48). This is where the person's speed first stops increasing and starts to decrease. The second turning point is at approximately 
. This is where the person's speed stops decreasing and starts to increase again.
D. The first turning point is at approximately (7, 48). This is where the person's speed first stops increasing and starts to decrease. The second turning point is at approximately (11, 44). This is where the person's speed stops decreasing and starts to increase again.
Complete the identity.
= ?
A. cos2 ? B. sin ? - 1 C. sin ? D. sin ? + 1