Find the Mode, Mean, Median and Quartiles. Between what values did the middle 50% of students' scores fall? Score Frequency 14 or less 11, 15 12 ,16 22 ,17 40, 18 53,19 79,20 77?​

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

180

step-by-step explanation:

f is the midpoint of

tip $2.90

total $17.40