Answer:
L = 20 + 2.99C and $30.47
Step-by-step explanation:
I'll use L short for lesson and C for clay
L = 20 + 2.99C this shows that you will be charged $20 plus 2.99 for each pound of clay.
Calculate for 3.5 pounds of clay
L = 20 + 2.99 ( 3.5)
= 20 + 10.47
= $ 30.47