Solve for x

Help, please

Identify the parent function that can be used to graph the function f(x)= (1/4x)^3

Answer asap. you begin with 1/2 scoop of ice cream. since you're hungry, you ask the vendor for 2/7 more scoops of ice cream. then, you eat 5/8 scoops. how many scoops of ice cream are left on your cone? i will mark brainliest for first correct answer.

The product of (7x-2) and (20-3x)/4. when x=4