You need to buy 10lb of rice. a 2lb bag costs $1.29. a 10lb bag costs $6.99. you want to buy a 10lb bag. your friend thinks buying a five 2lb bag is a better deal because the unit rate is lower. is your friend correct?

Yes your friend is correct. If you buy five bags of the 2 lb bag then you will pay $0.54 less than what you would have to pay for a 10lb bag.

Step-by-step explanation:

1.29 x 5 = 6.45

6.99 - 6.45 = 0.54

the final function for the graph becomes x-2=-1. before graphing you solve the equation, where x=1. then graph accordingly.   ( on the x-axis, 1 on the line will possess a vertical line.)

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