1. Is 2/12 = 5/28 a true proportion? Step 1. Cross multiply.

2 x 28 = 12 x 56
56 = 672

Step 2. is the proportion true?

, because the cross products are not .

The proportion true, because 2/12 and 5/28 equivalent ratios.

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.