Lily has 20 apples and 45 people ate 20 how many apples to do you need to feed people

For the function, f(x) = -5x 2, find f(-4).

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236

What is the inverse of f(x) = 6x -24