Find the sum of the series.
A. - 7
B. - 
C. 
D. 
Answer: D
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Find the surface area of the circular solid. Unless otherwise specified, use 3.14 for ? and round your answer to the nearest tenth.A sphere with r = 
in.
A. 2.3 in.2 B. 3.1 in.2 C. 2.0 in.2 D. 9.2 in.2
Write the following in simplest form using positive exponents.410 ÷ 5?4
A. 414
B. 
C. 4-6
D. 46
Divide as indicated.
A. x + 7 + 
B. 
C. x + 7 - 
D. x + 8
Solve the problem.A ball is thrown upward with an initial velocity of 21 meters per second from a cliff that is 
high. The height of the ball is given by the quadratic equation 
where h is in meters and t is the time in seconds since the ball was thrown. Find the time that the ball will be 30 meters from the ground. Round your answer to the nearest tenth of a second.
A. 7.6 seconds B. 7.5 seconds C. 7.0 seconds D. 6.9 seconds