Adam is rewriting the expression 8/5 8/2 in an equivalent form

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

Darcy deposited $390 into a savings account. as long as the account balance remains at or above $150, she does not have to pay a service fee for the account. for how many months can she withdraw $40 a month without having to pay service fees? a) 3 b) 5 c) 6 d) 9

Can anyone with some algebra 1 homework? : )