19. square abcd was dilated to form square a’b’c’d’. is this a reduction or an enlargement? what scale factor was used? (3 points)

Which of the following expressions is equal to 2x^2+8

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?

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.