Question

Tori's checking account charges a $10.75 monthly service fee and a $0.14 per-check fee. If Tori writes 19 checks per month, should she switch to a checking account that charges a $13.50 monthly service fee and no per-check fee?

Answer 1

y = 10.75 + 0.14x

y=13.50

19 checks...substitute 19 in for x in the top equation and compare the answer and the account that charges a flat rate of 13.50