Solve.If y varies directly as the cube of x, and y = 8 when x = 20, find y when x = 15.
A. 
B. 6
C. 
D. 
Answer: D
Mathematics
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Solve the problem.Given the velocity and initial position of a body moving along a coordinate line at time t, find the body's position at time t.v = cos 
t, s(0) = 1
A. s = 2? sin 
t
B. s = sin t
C. s = 
sin 
t + ?
D. s = 
sin 
t + 1
Mathematics
Find the domain and the range for the function.
A. D: All real numbers, R: All real numbers
B. D: 
, R: 
C. D: 
, R: 
D. D: 
, R: 
Mathematics
A hose can fill a swimming pool in 24 hours. Another hose needs 2 more hour(s) to fill the pool than the two hoses combined. How long would it take the second hose to fill the pool? ? Please enter your answer without the units.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the system of equations.
A. {(-1, 2, 5)} B. {(2, -1, 5)} C. {(-1, 5, 2)} D. {(2, 5, -1)}
Mathematics