A number plus three and seven-tenths

Write as an algebraic expression

Plz me i need i will give a brain

What properties allow transformation to be used as a problem solving tool

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.