At the market, 8 batteries cost $10.
How much do 6 batteries cost?

$7.50

Step-by-step explanation:

1 battery costs 10/8=5/4 dollars

(5/4)*6=15/2

15/2=7.50

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:

0.6, 3/5, and 6% are the 3 same portion.

but, when they're all changed to a decimal they would equal to 0.6.

hope this , good luck!