Answer:
i need help with something like that aswell
Step-by-step explanation:
The answer is y=10/7-5/7x, subtract the 5x and put it on the other side then divide the 7 from the y and divide it to 10-5x to get the answer.
To work this out you need to do 80 - 64 - 4.16 = 11.48
he received $11.48 change