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Mathematics 16 Online
OpenStudy (anonymous):

Please help i will give a medal. The table shows the amount of money in your bank account over a period of 5 weeks. You plan to keep saving at the same rate until you have $650 in the account. Which equation could you use to find the number of weeks, n, it would take to reach your goal? A) 35 . n = 650 B) 100 . n + 35 = 650 C) 6 . n + 100 = 650 D) 35 . n + 100 = 650

OpenStudy (anonymous):

OpenStudy (anonymous):

I know B is NOT correct

OpenStudy (rational):

whats the starting amount in bank ( when n = 0 ) ?

OpenStudy (rational):

to answer, look at the given table

OpenStudy (anonymous):

$100

OpenStudy (rational):

yes, so today you went to bank and deposited $100

OpenStudy (anonymous):

yes

OpenStudy (rational):

after "1" week you will go to bank and deposit "$35" more so that the total amount equals "$135"

OpenStudy (rational):

It seems you had started with $100, and every week you're depositing $35 Right ?

OpenStudy (anonymous):

yes

OpenStudy (rational):

so, after "n" weeks, you will be having : 100 + 35n amount in your bank ! isn't it easy ?

OpenStudy (rational):

so the equation thats useful in finding the number of weeks requred to have $650 in bank is : 100 + 35n = 650

OpenStudy (anonymous):

so D is correct?

OpenStudy (rational):

Yep!

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