Add 2 x 2 + 5 x + 6 to − 4 x 2 − x + 7

Find the value of the variable and the length of each secant segment.

100 points, hi, i’m not sure how to get the equation from the graph and table.

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?