let's first off convert the mixed fractions to "improper" and then proceed,

A=1, E = 5, I = 9, O = 15 ans U = 21
1,5,9,15,21
median = 'middle' number = 9
mean = (1+5+9+15+21) / 5 = 10.2
Tayler money ................... 320$
Estimated cost per chair....80$
Friend's chairs..................3
Total chairs..........> cc
cc = 320$/80$ +3
cc = 4 + 3 = 7 chairs
Y = -1.5x + 5.7
y = 0.5x + 0.3
-1.5x + 5.7 = 0.5x + 0.3
-1.5x - 0.5x = 0.3 - 5.7
-2x = - 5.4
x = -5.4/-2
x = 2.7
y = 0.5x + 0.3
y = 0.5(2.7) + 0.3
y = 1.35 + 0.3
y = 1.65
solution is (2.7, 1.65)
Sophia is more likely to be correct because the x coordinate is between 2 and 3 and the y coordinate is in between 1 and 2
X-1=-2x+5
X=2
Y=-2(2) + 5
Y= 1