Afurniture rental company charges a fixed amount plus a fee based on the number of days for which the furniture is rented. the graph below shows the amount paid for a different number of days to rent the furniture: a graph titled furniture rentals plots the number of days on the x axis and the amount in dollars on the y axis. a straight line joins the ordered pairs 0, 80 and 4, 240. what is the fixed amount charged? $20 $40 $60 $80

The fixed amount that is charged is:

                     $ 80

Step-by-step explanation:

We are given a straight line joins the ordered pairs (0,80) and (4,240).

We know that  the equation of a line passing through two points (a,b) and (c,d) is calculated by:

Here we have:

       (a,b)=(0,80) and (c,d)=(4,240)

Hence, the equation of line is:

Hence, the fixed charge is the initial charge i.e. when the number of days i.e. x value is zero.

Hence, when x=0 we have:

          y=80

       Hence, the fixed charge is:  80