What is the factored form of this expression 9x^2-64y^2? A. (9x+64y)(9x-64y)
B. (9x-64y)^2
C. (3x-8y)^2
D. (3x+8y)(3x-8y)

D. (3x+8y)(3x-8y)

I hope this helps.

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50