(a)
We have been given an equation 
. Upon taking derivative of this equation with respect to x on both the sides, we get:
(b)
In order to write the equation of tangent line, we need to find the slope of the line. We know that point (3,11) lies on the graph. Therefore, we write the slope of the tangent as:
Therefore, equation of tangent line is:
(c)
We know that slope of tangent is given as 
. The tangent will be vertical when denominator of slope is zero, that is:
Chocolate but it can also be grapes and raisins but i would go for the chocolate
Answer: the total is 4.0 yardage
Explanation: add 5.5 and 2.0 THEN subtract your total with the 3.5 and then you get the answer B)
