Find x if the distance between points L and M is 15 and point M is located in the first quadrant. L=(-6,2) M=(x,2)

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.

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

What is the perimeter of an isosceles triangle with each leg measuring 2x+3 and the base measuring 6x-2?