Acustomer's monthly water bill was $75.74. due to a rate increase, her monthly bill now $79.86. to the nearest tenth of a percent, by what percent did the amount of the customer's water bill increase? a) 4.1% b) 5.1% c) 5.2% d) 5.4%

Option D) 5.4%

Step-by-step explanation:

we know that

$75.74 > represent the 100%

so

using proportion

Find the percentage that the amount of the customer's water bill increase

Let

x > the percentage that increase

$75.74/100%=($79.86-$75.74)/x

$75.74/100%=($4.12)/x

x=100*4.12/75.74

x=5.4%

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

step-by-step explanation:

duck you