Answer:
Option B
The total amount is $63.31 if there is an 8% tax and the customer leaves a 20% gratuity.
Step-by-step explanation:
Given:
List of items Prices
1 Appetizer $8.59
2 Entrees $15.99 each
1 dessert $4.69
2 drinks $2.10 each
Total amount for the food order came to, 
=$49.46
Since the restaurant charges 8% as a tax on the total bill.
First, figure out the tax, 8% of $49.46
=$3.9568
Now, figure out the Customer leaves a gratuity, 20% of $49.46
=
The total amount( including 8% tax and 20% gratuity )=$49.46+$9.896+$3.9568=$63.3128
To effectively determine the correct answer, it would be helpful to write this into an algebraic expression. We let x as the number. We do as follows:
<span>Four times the square of a certain number increased by 6 times the number equals 108.
4x^2 + 6x = 108
The numbers can be either of the following since the equation generated was a quadratic equation which has two roots.
x = 4.5
x = -6 </span>