Bettina spent $75 on 5 shirts that each cost the same price. three of the shirts were red. which expression represents the total cost of the red shirts? a. 75 × 3/5 b. 75×5/3 c. 75/5 ×1/3 d. 75/3 × 1/5 plz

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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