Qoctor. 50
40
30
Total Number of Visits
20
10
0
8
10x
Age (years)
Use the line of best fit to estimate the age of a child who has visited the doctor 40 times.
OA 12 years old
OB.
11 years old
OC.
14 years old
D. 13 years old

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