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zaharov [31]
3 years ago
7

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?
Mathematics
2 answers:
Ilya [14]3 years ago
8 0
Okay. In order for Chris to reach is goal, he needs to change the amount he saves, which is the 20x. This is because 20 * 4 is 80, which will only get him up to $180, including what is in his savings account. 180 < 300.

How to find the real answer:

Alright. So we already know that Chris wants to have $300 in his savings account in 4 months, and already has $100 in the account. The way we could set up the equation is this: 300 = 4x + 100. First, subtract 100 from both sides to get 200 = 4x. Divide 4 from both sides to isolate the variable and you get x = 50. To me this goal, Chris would have to save $50 each month. He would have to change the coefficient (the number right before the variable) in the equation, so it would become this: T = 50x + 100.
Greeley [361]3 years ago
7 0
He should change how much he puts into his account each month to $50
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