I need help on this problem can someone help

-8 (y - 86) = -48

Ten times the square of a non-zero number is eqaul to ninety times the number

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

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