Ariver flows at the rate of 30 feet per minute what is the rate in seconds per foot

Which represents the inverse of the function f(x) = 4x? h(x) = x + 4 h(x) = x – 4 h(x) = x h(x) = x

What are the soultion(s) to the quadratic equation 40- x^2=0

Which recursive formula can be used to determine the total amount of money earned in any year based on the amount earned in the previous year? f(n+1)=f(n)+5