A plumber uses the equation c = 35h + 70 to determine the total amount of money charged for a service call, where h represents the number of hours worked and 70 represents a one-time fee. Based on this equation, how much should she/he charge for working 1.5 hours on a service call when no parts are required?

$122.50

Step-by-step explanation:

All you have to do is plug in the number(s). In this case, you put 1.5 in for "h", and you multiply 35 by 1.5, which gets you 52.5, then you just add 70, which gets you 122.50.

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)

93-8=85

855=17

17*4=68

there are 68 purple marbles in that bag