8. Let f be the function defined below, where c and d are constants. If f is differentiable at x=1, what is the value of c-d?

f (x) = x^2 + (2c +1)x − d, x ≥ −1
e(^2x+2) + cx + 3d, x < -1
A. -2
B. 0
C. 2
D. 3
E. 4

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.

The function f(x)= x5+ ( x + 3)2 is used to create a table. if x = -1 then what is f(x)?