-5 2/3 - 1/6 please help

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

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