I opened a grocery account at my bank with $250. Every week thereafter, I withdraw $90 from the account to pay for groceries. If x is the number of weeks I've had the account, then y is the amount in the account. Find an equation of a line in the form y = mx + b that describes my grocery account balance.

Question

Mathematics

Baby Bird

26 October, 23:43

I opened a grocery account at my bank with $250. Every week thereafter, I withdraw $90 from the account to pay for groceries. If x is the number of weeks I've had the account, then y is the amount in the account. Find an equation of a line in the form y = mx + b that describes my grocery account balance.

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Answers (1)

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Martha Grimes · Answer 1

y = - 90x+250

Step-by-step explanation:

From the information given, the equation would be that the amount in the account would be equal to - 90 that is the amount you withdraw from the account each week multiply for x that is the number of weeks plus $250 that is your initial balance:

y = - 90x+250, where

y = amount in the account

x = number of weeks.