Are the polygon similar if they are right a similarity statement and give the scale factor

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

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.

Simplify this expression. 8x 16(x + y)