Amelia is going to buy some cards for her friends. Each card costs $3. She finds a coupon for $2 off the entire purchase. Write an equation that shows the number of cards purchased, x, and the total cost, y.

Question

Mathematics

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8 March, 07:58

Amelia is going to buy some cards for her friends. Each card costs $3. She finds a coupon for $2 off the entire purchase. Write an equation that shows the number of cards purchased, x, and the total cost, y.

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Steven Newman · Answer 1

y = (3 * x) - 2.

This is because the card costs for 3 $ and should be multiplied by the number of total cards she buys in that particular day. So 3 * x.

Now as she has got a 2$ off coupon, whatever the total is she gets 2 dollars off on that price. So we will subtract 2 at that time. FInally all this summed up would be equal to y.