The table shows the cost in dollars, y, for shipping x number of chargers and electronic tablets.
number of items
shipped, x
cost for shipping
charger, y
($)
cost for shipping
electronic tablet, y
($)
2.50
4.00
5.50
7.00
3.50
5.50
7.50
9.50
which function shows the combined cost in dollars, y, for three shipments with x number of chargers and tests
o y = 2.00x + 4.00
o y=6.00x + 12.00
o y= 3.50x + 2.50
o y= 10.50x + 7.50