Answer:
<h2>The demand at a price of $1.50 per cone is 44 cones</h2>
Step-by-step explanation:
let us apply the interpolation formula to solve this problem
we have

Now let us set the values to the notation above
x= $1.20
x1= $2.20
x2= $1.50
y = 50 cones
y1= 30 cones
y2= ?

Substituting our given data we have

the demand at a price of $1.50 per cone is 44 cones
6.3c-2(1.5c+4.1)=6.3c-3c-8.2=3.3c-8.2 :))))
They are equal, 8 x 7 = 56 and 7 x 7 = 49