Answer:
23.75 + [(0.18)(23.75)]
Step-by-step explanation:
Ellen plans to leave an 18% tip with her $23.75 lunch bill.
Therefore, to determine her total bill, she use the expression
= 23.75 + ( 18% of 23.75 )
= 23.75 + ( 0.18 × 23.75 )
or 23.75 + [(0.18)(23.75)]
So the expression is 23.75 + [(0.18)(23.75)] to determine her total bill.