The best prediction for the number of new cases in year 15 is 158.
What is Quadratic Equation?
Any equation containing one term in which the unknown is squared and no term in which it is raised to a higher power solve for x in the quadratic equation.
Here, Given quadratic equation
y = -2x² + 40x + 8
at put the value of x = 15, we get
y(15) = -2 X (15)² + 40 X 15 + 8
y(15) = -2 X 225 + 600 + 8
y(15) = -450 + 600 + 8
y(15) = 150 + 8
y(15) = 158
Thus, the best prediction for the number of new cases in year 15 is 158.
Learn more about Quadratic Equation from:
https://brainly.com/question/17177510
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