Question

Solve the system of linear equations by the substitution method. please show. =)

x = 3y + 30

3x + 6y = 0

Answer 1

3(3y+30)+6y=0

9y+90+6y=0
15y=-90
y=-6


x = 3y + 30
x=3(-6)+30
x=-12

Answer 2

You owe $976.34 on a credit card that has an interest rate of 10.75% APR. You pay $100.00 at the end of each month.
You place the $100.00 in a savings account that earns a 2.75% APR. What is the difference in interest between savings earned and credit card interest paid?

Answer 3

sorry x=12

NOT -12

Answer 4

Thank you!

Answer 5

Your welcome :)