Using a rule why is = to 3 x + 4 find the value of y when x is 2

Edger needs 6 cookies and 2 brownies for every 4 plates how many cookies and brownies does he need for 10 plates

I'm marking the brainliest and it's 15 points

You borrow $15000 to buy a tractor. the simple interest rate is 4%. you pay the loan off after 8 years. what is the total amount you paid for the loan