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If you shift the linear parent function, f(x)=x, up 13 units, what is the equation of the new function?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83