Question 1(multiple choice worth 2 points) find the derivative of f(x) = 7 divided by x at x = 1.
-7
-1
1
7
question 2(multiple choice worth 2 points) find the derivative of f(x) = 4x + 7 at x = 5.
4
1
5
7
question 3(multiple choice worth 2 points) find the derivative of f(x) = 12x2 + 8x at x = 9.
256
-243
288
224
question 4(multiple choice worth 2 points) find the derivative of f(x) = negative 11 divided by x at x = 9.
11/9
81/11
9/11
11/81
question 5 (essay worth 2 points) the position of an object at time t is given by s(t) = 1 - 10t. find the instantaneous velocity at t = 10 by finding the derivative.