Please help
15 points

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

The graph shows the charges for a health club in a month. make a function table for the input-output values. writes an equation that can be used to find the total charge y for the number of x classes

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 + 4x + 5 = 0