A jacket that cost $80 is reduced in a sale to $64. what is the percentage taken away

Which function families have maximums and minimums? 1.)linear absolute value functions and exponential functions 2.) linear absolute value functions and quadratic functions 3.) linear absolute value functions and linear functions 4.) linear absolute value functions and constant functions

Interest begins accruing the date of the transaction except for auto loans mortgages credit card cash advances credit card purchases

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?