Answer:
Option d is correct
88 is the best prediction for the number of new cases in year 20
Step-by-step explanation:
The number of cases of a new disease can be modeled by the quadratic regression equation :
[tex]y = -2x^2+44x+8[/tex] .....[1]
where, x represents the year.
We have to find the best prediction for the number of new cases in year 20.
Substitute x = 20 years in [1] we have;
[tex]y = -2(20)^2+44(20)+8 = -800+880+8 = 80+8 = 88[/tex]
Therefore, 88 is the best prediction for the number of new cases in year 20
