Choose the missing exponent to create a polynomial: 3x^4+4x^2-9x^-?+2

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?

Ingredient c: 1/4 cup for 2/3 serving or ingredient d: 1/3 cup for 3/4 serving which unit rate is smaller