A plumber charges #50 for a house visit plus 35 per hour for extra hour of work. Express the cost function of the plumber as a function of the number of hour x he spends , find the range of the cost function if the number of hours is 3,5,8,10

answer: y = -12x + 108

step-by-step explanation: do (y = m x+b) formula.

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!

answer:   b

step-by-step explanation:

x2 = 16

x can not be a negative number because 16 is positive

the only answer would be positive 8  

what