just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !
step-by-step explanation:
4a. is 3 miles every hour
4b. is 1/3 of an hour per mile