Question

The number of cases of a new disease can be modeled by the quadratic regression equation y = –2x2 + 36x + 6, where x represents the year. Which is the best prediction for the number of new cases in year 15? A. 194 B. 96 C. 328 D. 614

Answer 1

You just need to plug in 15 for X in the equation. so, -2(15)2+36(15)+6 so the anwser is 486

Answer 2

Calculating the equation looks like 96 so B)