What is the missing reason in the proof Given:

Read the situations in the table below. then drag a graph and equation to represent each situation. indicate whether each of the relationships is proportional or non-proportional. edit : i got the right answer its attached

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Suppose your school costs for this term were $4900 and financial aid covered 3/4 of that amount. how much did financial aid cover? and how much do you still have to pay?