Find the composition. If f(x) = 2x2 - 6x and g(x) = -4x, find (g ? f)(x)
A. -8x2 + 24x
B. -8x3 + 24x2
C. 2x2 - 12
D. 32x2 - 6x
Answer: A
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Solve.5
- y2 = 10 y = x2 - 2
A. (0, - 
), (0, 
), (5, - 
), (5, 
)
B. (- 
, 0), (
, 0), (- 
, 5), (
, 5)
C. (- 
, 5), (
, 5)
D. (- 
, 0), (
, 0)
Multiply to find the exact answer. Express the answer as a whole or mixed number when possible and simplify.4
? 4 ? 
A. 16
B. 8
C. 16
D. 6
Find the exact value of the expression.sin 260° cos 20° - cos 260° sin 20°
A. - 
B. - 
C. 
D. 
The volume of a right-circular cylinder of radius r and height h is 
.
?
Suppose the radius and height of the cylinder are changing with respect to time t. At a certain instant of time, the radius and height of the cylinder are 2 and 3 in. and are increasing at the rate of 0.5 and 0.4 in./sec, respectively.
?
How fast is the volume of the cylinder increasing?
What will be an ideal response?