Answer:
Cost of each salad = $12
Explanation:
Olivia ate at the same restaurant four times. she ordered a salad and left a $1.50 tip on each visit. She spent a total amount of $54.
Let x be the cost of salad
She ate the salad four times. So the cost of 4 salad is 4x
Then she left a tip of 1.50 each visit. 4 times 1.50 = 6 dollars
Total cost is $54
cost of 4 salads + tip amount is equal to total cost

Solve for x
Subtract 6 from both sides

Divide both sides by 4
x=12
Cost of each salad = $12