The tip amount to be given is $ 27.13
The discounted amount is $ 20.3475
Total for the bill with the discount and tip included is $ 142.4325
<em><u>Solution:</u></em>
Given that,
Sabella & her family went to Red Lobster
Their bill was $135.65
<em><u>They wanted to leave a 20% tip on the original bill amount</u></em>
Thus the tip paid is given as:
Tip amount = 20 % of 135.65

Thus the tip amount to be given is $ 27.13
<em><u>They had a 15% off coupon on meals more than $75</u></em>
Thus the discounted amount is given as:

Thus the discounted amount is $ 20.3475
<em><u>What would be their total for the bill with the discount and tip included</u></em>
Total bill = (original bill - discounted amount) + tip amount
Total bill = (135.65 - 20.3475) + 27.13
Total bill = 142.4325
Thus total for the bill with the discount and tip included is $ 142.4325