Acerius Find the angle of elevation from
point C to point A.
58°
6 mi
?
B
С
Angle of elevation = [ ? 1°
Enter

Given :

To Find: Part A: Determine the vertex. What does this calculation mean in the context of the problem?Part B: Determine the x-intercepts.

Solution:

General form of parabola :

where (h,k) is the vertex

Convert the given equation in the general form

So, (h,k)=(30,784)

So, the vertex of given parabola is (30,784)

x denotes number of windshields repaired

y denotes the amount of profit

So, the vertex tells the maximum profit .

So, repairing 30 windshields provides the maximum profit of amount $784

Now to find x intercept substitute y = 0 in the given equation:

Thus there is 0 profit when 2 or 58 windshields repaired