Simplify (2x – 2y)(2y + 8) = ?
a. 4xy – 16x – 4y2 – 16y
b. 4xy + 16x + 4y2 + 16y
c. 4xy – 4y2
d. 4xy + 16x – 4y2 – 16y

Cass decided to sell game programs for the hockey game. the printing cost was over 20 cents per program with a selling price of 50 cents each. cass sold all but 50 of the programs, and made a profit of $65. how many programs were printed? letting p represent the number of programs printed, set up an equation that describes this situation. then solve your equation for p.

If on=8x-8,lm=7x+4,nm=x-5,and ol=3y-6

Which has the greater energy, light of wavelength 519 nm or light with a frequency of 5.42 x 10^8 sec^-1?