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Starla bought cloth napkins at an outlet store for $2.50 each, and she also used a $15 off coupon. In the equation below, x represents the number of napkins, and y represents the cost before tax.

y = $2.50x - $15

If Starla paid $25.00 before tax, how many napkins did she buy?

Question

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Starla bought cloth napkins at an outlet store for $2.50 each, and she also used a $15 off coupon. In the equation below, x represents the number of napkins, and y represents the cost before tax.


y = $2.50x - $15

If Starla paid $25.00 before tax, how many napkins did she buy?

igreen · Answer

Just plug in 25 for y:

25= 2.5x - 15

Add 15 to both sides:

35 = 2.5x

Divide 2.5 to both sides, what's 35 / 2.5? @The_Jokers_wife

anonymous · Answer

6





10





18





16
so 16?

igreen · Answer

Oh yes, 16 is right..sorry that would be 40 / 2.5, not 35.