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a = 18t + 5 4) Leo made an initial deposit to a savings account. Each week thereafter, he deposited a fixed amount into the account. The equation above models the amount, a, in dollars, that Leo has deposited after t weekly deposits. According to the model, how many dollars was Leo's initial deposit? (Disregard the $ sign when gridding your answer.) 5 6 8 9​

A 18t 5 4 Leo Made An Initial Deposit To A Savings Account Each Week Thereafter He Deposited A Fixed Amount Into The Account The Equation Above Models The Amoun class=

Sagot :

According to the model, Leo's initial deposit was $0

According to the model, how many dollars was Leo's initial deposit?

The model is given as

a = 18t + 5

When he makes his initial deposit, the value of t is

t = 0

i.e. this represents his balance before he starts saving on a weekly basis

Substitute 0 for t in the equation a = 18t + 5

So, we have

a = 18 * 0 + 5

Evaluate

a = 5

Hence, Leo's initial deposit was $0

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