A restaurant owner wants to give new wait staff a sense for how much money they can expect to make from tips. She collected data on the number of customers at a table, x, and
the tip amount in dollars, y, from that table. Then, she found the equation of the regression
line:
y = 2.8x + 0.7
According to this regression line, what tip can be expected from a table of 8 customers?
Round your answer to the cent.
$