do you want an expression?
if so it would be T = 40 + 20h
t = total
h = hour(s)
Answer:
-4 to 0 (both -4 and 0 are included in the range because of the dots)
135 divided by 18 is 7.5 so I would guess 7 each week and maybe possibly 8 on some weeks
564/24 equals to 47/2 or 23.5
