How do you round 45 to the nearest 10

Evaluate the following expression 1/3^2

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.

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,