Which expression can be substituted for x in the top equation of the following system to solve the system by substitution? 5x-2y=8
x-y=4
No links please.

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

There are 8 movies that you would like to see currently showing in theatres. in how many different ways can you choose a movie to see this saturday and one to see this sunday?

Amy is plan her school's new basketball court. the west edge of the basketball court is located on the line y = 5x + 2. the east edge cannot intersect with the west edge. on which line could the east edge be located? −y − 5x = 100 y + 5x = 100 −5x − y = 50 5x − y = 50