A. C(n)=10n+125
cost×number of buttons is equal to 10 cents times the number of buttons, plus the $125 cost of the button machine
75.339
nearest tenth: 75.3
nearest hundredth 75.34
nearest whole number 75
BANK A:
5,000*0.03*5=750
BANK B:
5,000*0.025*6=750
They are the same
