Tommy walked 3 2/7 miles. write the distance tommy walked as an improper fraction.

23/7

Step-by-step explanation: Reduce the fractional part 2/7. Convert the mixed number 3 2/7 into an improper fraction first by multiplying the the denominator 7 by the whole number part 3 and add the numerator 2 to get the new numerator. Place the new numerator 23 over the old denominator 7.  

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