Chris has $100 in his savings account and he adds $20 a month to the account. The total amount can be represented by the linear function T = 20x + 100. His goal is to have a total of $300 in four more months. What should he change in the function to reach this goal?
You would have to plug 10 into x in t=20x+100. Because if you are trying to get $300 in all you would have to multiply 20×10 which is 200, then add the 100 which is 300 in all.
