What is the first term of an AP whose common difference is 2 and 31st term begin -88

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

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.

How many solutions does the nonlinear system of equations graphed bellow have?