Marie joined a book club. She had to pay a one time regristration fee of $45and then $2.50 per book. How much did it cost her to buy 12 books?

Step-by-step explanation:

To graph piece wise function, make a table for each f(x)

f(x)= 3x+2  if x<5, x is less than 5 so we assume x  values that is less than 5

x         y=3x+2

5        3(5) +2 = 17               (5,17)

1          3(1)+2= 5                   (1,5)

2         3(2) + 2= 8                (2,8)

f(x)= -3x-2  if x>=5, x is greater than or equal to 5 so we assume x  values that is greater than 5

x         y=3x+2

5        -3(5) -2 = -17               (5,-17)

6          -3(6)-2= -20              (6,-20)

7         -3(7) - 2= -23              (7,-23)

Graph all the points we got from the table

Correct graph is attached below