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You borrowed 90 dollars from your grandmother. You pay back 15 dollars each week. Write in standard form an equation in which y is the amount of money owed after x weeks.

Respuesta :

CJD2015anime
y= money borrowed  minus  money paid times number of weeks

x = weeks
Ans:  y = $90 - $15x
Sanarah
y = -15x + 90 

But that's not in standard form (it's in slope-intercept form). So, to change the equation into standard form, add 15x to each side.

y = -15x + 90
y + 15x = -15x + 90 + 15x
15x + y = 90

Hope this helped :)

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