Starla bought cloth napkins at an outlet store for $2.75 each, and she also used a $5 off coupon. In the equation below, x represents the number of napkins, and y represents the cost before tax.
y = $2.75x - $5
If Starla paid $69.25 before tax, how many napkins did she buy?
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OpenStudy (patrickweewoos):
@iGreen
OpenStudy (patrickweewoos):
@iGreen
OpenStudy (patrickweewoos):
Im here green
OpenStudy (igreen):
Solve the equation.
y = 2.75x - 5
Plug in 69.25:
69.25 = 2.75x - 5
Add 5 to both sides:
74.25 = 2.75x
Divide 2.75 to both sides.
What's 75.25 / 2.75? @PatrickWeeWoos
OpenStudy (patrickweewoos):
IDK
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OpenStudy (patrickweewoos):
@iGreen
OpenStudy (igreen):
Type it in your calculator.
75.25 divided by 2.75
OpenStudy (patrickweewoos):
27.3636364
OpenStudy (patrickweewoos):
@iGreen is it right
OpenStudy (igreen):
Yes..so she bought approximately 27 napkins..I'm not 100% sure on that..xD
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