An restaurant bill before tax is $15.50. if the sales tax is 8% and a 15% tip is added, what is the total cost of the meal?

$19.07

Step-by-step explanation:

Given : Restaurant bill = $15.50

Tax rate = 8% =0.08 [we divide percentage by 100 to convert it into decimal. ]

Tax amount =  (Tax rate)x(Restaurant bill)

= (0.08) x ($15.50)

= $ 1.24

Tip rate = 15% =0.15

Tip amount =  (Tip rate)x(Restaurant bill)

=(0.15)x ($15.50)

= $2.325≈$2.33

Now , the total cost of the meal =  (Restaurant bill)+(Tax amount)+(Tip amount)

=   $15.50 + $ 1.24 + $2.33

= $19.07

Hence, the total cost of meal = $19.07

a and c

for infinitely many solutions we require both left and right sides to be equal

distribute and simplify

a

14 - 8x = 20 - 8x - 6 = 14 - 8x ← both sides equal so infinite solutions

b

6x - 54 = 6x - 54 + x = 7x - 54 ← not equal

c

4x + 16 = 4x + 10 + 6 = 4x + 16 ← both sides equal so infinite solutions

d

5x - 40 + 10 = 5x + 10

5x - 30 = 5x + 10 ← not equal