n=9
step-by-step explanation:
7 times a number = 7n
decreased by 13 = 7n-13
same as is =
5 times the number = 5n
increased by 5 = 5n+5
7n-13 = 5n+5
2n=18
his answer is incorrect. i just used it, and it said it was incorrect. the answer is 0.
its four gallons, i took the test and this was right.
on the dot where it starts for four gallons, that's when it doesn't move up any more.