Hayden invested $750 for three years at an interest rate of 0.035. how much interest did he earn in that time?

The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). the mean maximum oxygen uptake for elite athletes has been found to be 60 with a standard deviation of 7.2. assume that the distribution is approximately normal.

Haley buys 9 pounds of apples for $3. how many pounds of apples can she buy for $1?

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)