Two computer technicians both charge a fee for a home visit ,plus an hourly rate for their work. Dana charges a $64.95 fee, plus $45/h. Tom charges a $79.95 fee, plus $40/h. For what length of service call do Dana and Tom charge the same amount?

3 hours

Step-by-step explanation:

Step one:

given data

Dana charges

$64.95 fee, plus $45/h.

let the number of hours be x

and the total charges be y

y= 45x+64.951

Tom charges

$79.95 fee, plus $40/h.

let the number of hours be x

and the total charges be y

y= 40x+79.952

Step two:

Equate eqn 1 and 2 to find x

45x+64.95=40x+79.95

collect like terms

45x-40x=79.95-64.95

5x=15

divide by 15

x= 15/5

x= 3 hours

the number of the people going.

step-by-step explanation:

the cost to buy one movie ticket is $7. if the total cost for the movie is a function of how many people go, then the input is : the number of the people going.

tip $2.90

total $17.40