Question 86416
Cost of oranges as a function of the number of oranges
y=0.7n+20.34 

Cost (50)=0.7(50)+20.34 [plug-in 50 oranges for "x"]
Cost(50)=$55.34 for 50 oranges

{{{ graph( 300, 200, -60, 60, -10, 60, 0.7x+20.34 ) }}}