The surface area, S, of a sphere of radius r feet is S = S (r) = 4πr2. Find the instantaneous rate of change of the surface area with respect to the radius r at r = 4.

a. 32pi

b. 16pi

c. 64pi

d. 4pi

If a shelf can support 3 3/4 pounds and a book weighs 3/8 of pound, how many books can the shelf hold?

To convert 180 seconds to minutes, which proportin should you use?

Rewrite the equation 5x - 2y = 4 so it is in the form y = mx + b

Hello my name is Pablo.

Three consecutive integers have a sum of 57. Find the integers.

Mrs McDonald spent 24.65 at a yard sale on Saturday. on Sunday she went to another sales and spent 14.95 more than she did on Saturday. what is the total amount that Mrs McDonald spent on both yard sales

Linda purchase a prepaid phone card for $30. Long distance calls cost $.17 a minute using this card when do use her card. Linda use her card only to make a long distance call if the remaining credit on her card is $22.

Consider this equation: - 2x - 4 + 5x = 8 Generate a plan to solve for the variable. Describe the steps that will be used.

What is the graph of the function y=2x2^x

Determine the prime factorization of 104. 24• 3 • 5 23• 13 22• 13 22• 5