Please help with transformation or functions

Simply 8x squared + 5(7x squared- x) - 2x =

Me asap! what is the slope of this line? enter your answer in the box.

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.