4. The prom committee sells t-shirts to raise money for the prom. The protit from sales of 80 short sleeve t-shirts and 100 long sleeve t-shirts s $320. Profit from sales of
80 short sleeve t-shirts and 75 long sleeve t-shirts is $270. How much profit do they
carn for each short sleeve t-shirt sale?

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

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.

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.