Question 1164111
(13, 31.25)
(39, 76.75)
find the equation of a line with those two points and substitute 29 for x
slope is 45.5/26=1.75
point slope formula y-y1=m(x-x1), m slope, (x1, y1) point
y-31.25=1.75(x-13)
y-31.25=1.75x-22.75
y=1.75x+8.5

when x=29 (HCF)
y=1.75(29)+8.5
=$59.50