The total number of participants who went on the field trip consisted of all the students and 7 adult chaperons. Two-thirds of the total participants rode on a large bus, and the rest rode a smaller bus. If 54 students rode the large bus, how many students went on the field trip?

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

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answer: c

(2, -4)

goes 7 to the

(9, 4)

easy