6. Deshawn has a box of batteries. Some of the batteries provide 1.5 volts each. The rest of the batteries provide 9 volts each. The total voltage provided by all the batteries in the box is 78 volts. The equation shown below models this situation. 1.5x + 9y = 78 One solution to this equation is (10, 7). What does this solution represent? A. The box contains 10 total batteries, 7 of which provide 1.5 volts each. B. The box contains 10 total batteries, 7 of which provide 9 volts each. C. The box contains 10 batteries that provide 1.5 volts each and 7 batteries that provide 9 volts each. D. The box contains 10 batteries that provide 9 volts each and 7 batteries that provide 1.5 volts each.
