Artie and walter both own part-time personal training businesses. artie charges a membership fee of $100 every month and then $40 per hour of training. walter does not charge a membership fee, but charges $60 per hour of training.
1) write a function a(t) representing artie’s monthly income based on t hours of training: (2 points)

2) write a function w(t) representing walter’s monthly income based on t hours of training: (2 points)

3) both artie and walter have time to train no more than 15 hours a month. fill in the table below to show the monthly income for the first 15 hours of training based on the functions above. (5 points)

t a(t) w(t)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15