Casey waited tables this summer. On Monday, she made $60. Each day, her pay decreased by $4. What integer represents the total change in her pay over a 5 - day period?

The answer is $260 first you do 60-4 that equals 56 and then you do 56-4 = 52 and you do 52-4 = 48 then 48-4=44 then you do 60+56 = 116 and then you do 116+52=168 and then do 168+48 = 216 and then 216+44=260 the answer is 260