Find the domain of the composite function f?g.f(x) = 3x + 9, g(x) = 
A. (-?, -3] ? [0, ?)
B. [0, ?)
C. [-3, ?)
D. (-?, ?)
Answer: B
Mathematics
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Find the derivative of the function.y = log8
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.What multiplication fact is illustrated by the rectangular area model? 
A. 2 × 
= 
B. 2 × 
= 
C. 2 × 
= 5
D. 
× 
= 
Mathematics
Convert the angle in degrees to radians. Express the answer as multiple of ?.87°
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.An explosion causes debris to rise vertically with an initial velocity of 64 feet per second. The function 
describes the height of the debris above the ground, s(t), in feet, t seconds after the explosion. What is the instantaneous speed of the debris when it hits the ground?
A. 128 B. 64 C. -64 D. -128
Mathematics