Find the derivative of f(x) = 8 divided by x at x = -1.
a. 4
b. 0
c. 8
d. -8

Jose predicted that he would sell 48 umbrellas. he actually sold 72 umbrellas. what are the values of a and b in the table below? round to the nearest tenth if necessary

Identify the number as a rational or irrational.explain. 127

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.