(not sure if this is right just trying to help) 7(3x+7y)
<h3>
Answer: c = 7/4</h3>
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Work Shown:
Compute the function value at the endpoints

With a = -5 and b = 4, we have

So,

Use algebra to solve for c

Step-by-step explanation:
let M be the midpoint of x and y
xM= (xX+xY)/2 =(0+88)2=44
yM=(Yx+yY)/2=(21_103)/2=_41
M(44,_41)