Mason gave the waiter a $14.58 tip, which was 15 percent of the dinner bill. What was the amount of the dinner bill before he added the tip? $9.72 $21.87 $97.20 $218.70 10% 10% 10% 10% 10% 10% 10% 900 1,050 1,125 1,200

$97.20

Step-by-step explanation:

Let

x = the dinner bill

Tip = 15% of the dinner bill

Amount of tip = $14.58

15% of the tip = $14.58

15% of x = 14.58

15/100 * x = 14.58

0.15 * x = 14.58

0.15x = 14.58

Divide both sides by 0.15

x = 14.58/0.15

x = $97.20

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2