Jana and her friend bought 4 hamburgers, 3 orders of fries, and 2 milk shakes for $3 each. they paid for the food with $20. which part of the equation represents the total cost of their items? justify your answer.
c = $20 - (4h + 3f + 6)
a) $20; they paid $20 for the food.
b) (4h + 3f); find the total cost by adding the price of 4 hamburgers to the price of 3 fries
c) 4h + 3f + 6; find the total cost by adding the price of 4 hamburgers to the price of 3 fries to the price of 2 milkshakes.
d) c = 20 - (4h + 3f + 6); find the total cost by subtracting the price of 4 hamburgers to the price of 3 fries to the price of 2 milkshakes.