The manager of a restaurant is implementing a new pricing plan for lemonade. They will charge $0.45 for the cup plus $0.30 per ounce ,n, of lemonade. The pricing plan is represented by the expression below.

0.45=0.30n

How much will the restaurant charge for a 12-ounce cup of lemonade?

A.
$3.60

B.
$4.05

C.
$5.70

D.
$9.00

To calculate the total cost of a 12-ounce cup of lemonade using the pricing plan, we substitute n = 12 into the expression:

Total cost = $0.45 + ($0.30 x 12)
Total cost = $0.45 + $3.60
Total cost = $4.05

Therefore, the restaurant will charge $4.05 for a 12-ounce cup of lemonade.

Answer: B. $4.05