Enter a number in the box so that the equation will have an infinite number of solutions.
4x - 8 = 4x + ???

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

List the sides of δrst in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12