Which of the following is NOT true about unit rates? Aunit rate relates a quantity to 1

Unit rates can be used to compare two rates

Any rate is equivalent to its unit rate.

Aunit rate always relates quantities with the same units.

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

Having a hard time understanding this question (see attachment).