Question 360455
c = $535 + 4.50n
In this equation, the cost (c) = $4.50 for each item (n) + a fixed cost of $535
:
Say you want the cost for 10 items, then n = 10, 
substitute 10 for n in the given equation
c = 535 + 4.50(10)
c = 535 + 45.00
c = $580 is the total cost for 10 items
:
The coordinates would be 10, 985, on a graph x=10, y=985
:
A graph of this equation, shows that when n = 10, cost = 580
{{{ graph( 300, 200, -10, 40, -200, 1200, 4.5x + 585 ) }}}
:
Did I shed some light on this for you here?