Answer:
B
Step-by-step explanation:
9 divided by 4, then multiply by 12
y = 2.25(12)
$9 for 4 pizzas
$9/4 = $2.25
$9 for 4 pizzas is the same ratio as $2.25 per 1 pizza
To deliver x number of pizzas, the charge, y, is
y = 2.25x
For 12 pizzas, the delivery charge is
