Solve the problem.Find the volume V and surface area S of a sphere of radius 4 centimeters. Express the answer in teems of ?.
A. V = 256? cm3; S = 4? cm2
B. V = 
? cm3; S = 64? cm2
C. V = 
? cm3; S = 
? cm2
D. V = 64? cm3; S = 16? cm2
Answer: B
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Translate the problem to a system of equations, then solve using Cramer's Rule.Two different gasohol mixtures are available. One contains 5% alcohol and the other 12% alcohol. How much of each should be mixed to obtain 500 gallons of gasohol containing 10% alcohol?
A. 208 gal 5%, 292 gal 12% B. 143 gal 5%, 357 gal 12% C. 357 gal 5%, 357 gal 12% D. 25 gal 5%, 60 gal 12%
Simplify the expression. Write the result using positive exponents only.-2z-2
A. 
B. - 
C. - 
D. 
For a discount loan with 
, 
, and 
months, the discount is:
A. $2840.25 B. $2480.50 C. $269.50 D. $323.40
Divide.(x2 + 4x - 21) ÷ (x + 7)
A. x2 + 5x - 14 B. x + 3 C. x - 3 D. x2 - 3