What is the top number in a sutraction problem

What is the inverse of the function f(x)=4x+8

Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.

In order to be invited to tutoring or extension activities a students performance 20 point higher or lower than average for the