In October, Paul ran 3 miles more than 4 times the number of miles he ran in September. He ran 35 miles in October. How many miles did he run in September? PLEASE HELP!!!

Adan has decided to purchase an $9000 car. he plans on putting 20% down toward the purchase and financing the rest at 7.9% interest rate for 3 years. find his monthly payment a) $225.29 b) $298.81 c) $204.78 d) $236.89

If y varies as x, and y=8 as x=4 what will be the value of y if x=2

Me because i don't understand how to do it.: )