3.2 is the Length of y 7.5 is the length of z and the length of x is 12.5
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.
Answer and Step-by-step explanation:

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Answer:
i am not sure i think its either c or b
Step-by-step explanation: