The local Phi Theta Kappa chapter is selling lemon shakeups on campus as a fundraiser for their trip to Nerd Nation this year. PTK members are volunteering their time to man the booth, but the chapter spent $822 on supplies to make the shakeups. They intended to charge $2.97 per shakeup.

Construct a linear model that represents the money raised by this fundraiser.

The chapter purchased enough materials to make 248 shakeups. How much money will they have raised (+) or lost (-) if they sell all the 248 shakeups?

Round your answer to the nearest cent.