Will give 98 the number of cases of a new disease can be modeled by the quadratic regression equation y= -2x^2+40x+8, where x represents the year. which is the best prediction for the number of new cases in year 15? a. 276 b. 394 c. 72 d. 158

D. 158

Step-by-step explanation:

Fill in the x's with a 15:

so y = 158

10010010001010010101001001010010100101010010101010010010101010110010001011010010010001

step-by-step explanation:

the graph in the attached figure

step-by-step explanation:

we have

using a graphing tool

the graph in the attached figure

the roots are ( x-intercepts) x=-0.5,x=1,x=3

the y-intercept is the point (0,3)