Solve the problem.The number G of gears a machine can make varies directly as the time T it operates. If it can make 2867 gears in 5 hours, how many gears can it make in 7 hours?
A. 573.4 gears
B. 4013.8 gears
C. 0.0122 gears
D. 2879 gears
Answer: B
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Provide an appropriate response.Solve, checking for extraneous roots: 
= 0
A. x = -4 B. x = 0, x = -4 C. x = -4, x = -3 D. x = 0
Refer to the circle graph to solve the problem.Time Required to Install Carpeting in a House (Work Shift = 8 hours) 
In which activity was the greatest amount of time spent? How many hours did this activity take?
A. Removing old carpet; 1 hour
B. Installing new carpet; 3 hours
C. Cleaning up; 
hour
D. Moving furniture; 
hours
Find the x-values where the function does not have a derivative.
A. x = -3, x = 0, x = 3 B. x = -2, x = 0, x = 2 C. x = -3, x = 3 D. x = -2, x = 2
Find the value of df-1/dx at x = f(a).f(x) = x3 - 12x2 - 2, x ? 8, a = 6
A. - 
B. - 
C. -36
D. - 