Beth has already jogged 3 miles. She plans to jog less than 12 miles. Which inequality can be used to find the number of miles she has left to jog?

The inequality x + 3 < 12 can be used to determine the number of miles left to jog.

Step-by-step explanation:

It is given that:

Number of miles Beth has already jogged = 3 miles

She plans to join less than 12 miles.

Let,

x represent the number of miles left to jog.

x + 3 < 12

x + 3 - 3 < 12 - 3

x  < 9

Therefore,

The inequality x + 3 < 12 can be used to determine the number of miles left to jog.

answer: the answer is 23

step-by-step explanation:

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