Can you find the area for this?

Consider the function f(x)=-5x+3 what is f(-2)

What is 140% of 25? because i need

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