The figure on the left shows a line segment 2 inches long forming a 45° angle with a dashed line whose length is not given. the figure on the right shows a compass set at a width of 1½ inches with its point on the top end of the 2−inch segment. an arc is drawn intersecting the dashed line twice.

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18