a large pizza coasts three more than two times a small pizza. iif james purchased four small pizzas for $39 how much is a large pizza

Question

i think it is inequalities but i dont know how to start it 

Answer 1

Let s = price of small pizza

Let L = price of large pizza

 

James bought 4 small pizzas for $39:

4s = 39

s = 39/4 = $9.75

 

Large costs 3 more than two times a small pizza:

L = 2s + 3 = 2(9.75) + 3 = $22.50