For the given functions f and g, find the composition.f(x) = 4x2 - 3x; g(x) = 2x
Find (g ? f)(x).
A. 8x3 - 6x2
B. 16x2 - 3x
C. 4x2 - 6
D. 8x2 - 6x
Answer: D
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Use a calculator to find the acute angle between the planes to the nearest thousandth of a radian.7x - 2y - 9z = 1 and- 5x + 8y - 8z = -1
A. 1.424 rad B. 0.882 rad C. 0.147 rad D. 1.543 rad
If an average-sized man falls with a parachute, then his velocity 
, in feet per second, t seconds into the fall is given by
.
?
During which period will his velocity be between 9.99 and 12.99 feet per second? Round to two decimal places.
A. From 0.65 seconds on B. From 9.77 seconds on C. From 0.43 to 0.65 seconds into the fall D. From 4.88 to 9.77 seconds into the fall
Answer the question.Supply and demand equations are given by
where y represents price in dollars and x represents the number of items in supply. The market equilibrium is the solution to this system. At market equilibrium, is the supply 12 items and the price $1440?
A. Yes B. No C. Cannot be determined
Simplify the expression. Assume all variables represent nonnegative real numbers. Write the answer in exponential form when necessary.(64x3y-12)1/3(x4y-1/3)
A. 
B. 
C. 4x5y13/3
D. 