Find the sum.
A. 20
B. 22
C. 16
D. 21
Answer: B
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For the given rectangular equation, write an equivalent polar equation.x2 + y2 - 10x = 0
A. r = 10 sin ? B. r = 10 sin2? C. r = 10 cos ? D. r = 10 cos2 ?
Write the first four terms of the recursive sequence.a1 = 8, an = 1 - 
for n ? 2
A. 8, 
, 
, -6
B. 8, 
, - 
, 8
C. 8, - 
, 
, 
D. 8, 
, - 
, -8
Solve the problem.Let the distance from home in miles of a person after t hours on a straight path be given by 
Approximate the average rate of change of s from 
to 
to the nearest tenth and interpret the result.
A. about 3.7; average speed is about 3.7 mi/hr B. about 2.9; average speed is about 2.9 mi/hr C. about 0.7; average speed is about 0.7 mi/hr D. about 2.5; average speed is about 2.5 mi/hr
Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in the ordered pair form.
A. ? B. {(-3, 4)} C. {(3, 5)} D. {(-4, 5)}