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Step-by-step explanation:

The unit rate for 5 lb bag is 1.75 lb
Answer:
4
Step-by-step explanation:
3x^2 + 2(y-1)/x+y^2
3(4)^2 + 2(3-1)/4+3^2
3x16+2x2/4+9
48+4/13
52/13
4
Unknown factor is multiplication and then quotient is division