Answer:
$37
4.50x + 10
Step-by-step explanation:
Given
Delivery fee = $10
Price per sandwich = $4.50
Price of 6sandwiches = 6(4.50) = $27
Total cost of 6 sand wiches = Price of 6sandwiches+Delivery fee
Total cost of 6 sand wiches = $27 + $10
Total cost of 6 sand wiches = $37
For x sandwiches
Price of x sandwiches = (4.50)x = $4.50x
Total cost of x sandwiches = 4.50x + 10