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eduard
3 years ago
14

Jacob has $1,000 in a checking account and withdraws $40 each week. His account requires a minimum balance of more than $400. Wr

ite an inequality to model the number of weeks, x, that he can withdraw $40 to maintain the minimum balance requirement.
Mathematics
1 answer:
vova2212 [387]3 years ago
6 0

Answer:

1000-40x>400

Step-by-step explanation:

Let's call B the balance of Jacob's checking account. Each week he withdraws $40 from his actual balance of $1000, so if x is the number of weeks, the account's balance is

B=1000-40x

The balance must be more than $400, which means

1000-40x>400

That is the inequality to model the situation. If we wanted to know the limit for x, we can solve the inequality. Operating:

1000-400>40x

600>40X

x

Or x<15

Which means Jacob can withdraw $40 14 times at most to maintain the minimum balance requirement

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