Joseph had 380 heart beats in 4 minutes how many heart beats does he have in 15 minutes

The surface area (sa) of a cube with a as the length of each of its sides is given by the formula . if the surface area is known, how can you rewrite the formula to find its side?

What is the smallest integer n such that n\sqrt{2} is greater than 20

What is the value of g(8) for the function g(x) in part c? what does this value mean in the context of the situation you described in part c?