I am completely confused on this limits intro assignment. The directions are to "Evaluate each limit ALGEBRAICALLY. Show it GRAPHICALLY." the first problem is this ( limx→−1 (x3 − 2x2 − 1) )

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.