How do you get 40y from the difference of 2 squares with the problem (5y+4+3x)(5y+4-3x)? i understand distribution method. i don't know where the 40y comes from using the special product method.

Sheila wants to bake six muffins but the recipe is for 12 muffins . this means you only need half of the ingredients listed how much of the of each ingredient does she need? one cup and banana chips ,7 tablespoons oil , two eggs, 3/4 cups flour 1/4 cup walnuts show all you work and justify your answer using a baby toulmin.

Acircle has a circumference of 28.36 units what is the diameter of the circle

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)