Perform the division.
A. 3r7 - 5r4
B. 3r5 - 5r2
C. 9r5 - 15r2
D. 3r6 - 5r3
Answer: B
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Solve the problem.A circle has a radius of 12 centimeters. Find the area of the sector of the circle formed by an angle of 
If necessary, round the answer to two decimal places.
A. 12.57 cm2 B. 6.28 cm2 C. 0.52 cm2 D. 2 cm2
Solve the problem.A pharmaceutical company introduces a new headache medication on the market. They advertise the product on television and find that the percentage P of people who buy the product after t weeks satisfies the function 
Find the formula for the rate of change P'(t).
A. P'(t) = 
B. P'(t) = 
C. P'(t) = 
D. P'(t) = 
Decide whether or not the ordered pair is a solution to the equation.x = 
y; (2, 16)
A. Yes B. No
Convert the measurement as indicated.21,120 ft to miles
A. 4.5 mi B. 105.6 mi C. 5 mi D. 4 mi