At this market, 6 batteries cost 10.38 how much do 8 batteries cost

To find the cost of one, divide 10.38 by 6, so

10.38/6 = 1.73

1.73 = price per battery

To find the price of 8, multiply the cost of price per battery with however many items you need, in this case 8 so,

1.73 x 8 = 13.84