y = 0.038 x^2 - 2.6 x + 62.51

models the number of deaths per year per thousand people, y, for people who are x years old, 40

Question

y = 0.038 x^2 - 2.6 x + 62.51

 models the number of deaths per year per thousand people, y, for people who are x years old, 40 <= x <= 60. Approximately how many people per thousand who are 56 years old die each year? For the purposes of this problem, please round your answer to a whole number.

aum · Answer

Put x = 56 in y = 0.038 x^2 - 2.6 x + 62.51and calculate y.

anonymous · Answer

I got that, but then I get stuck solving for X with the X and X^2

anonymous · Answer

@aum

anonymous · Answer

wait im putting 56 in for the x's?

anonymous · Answer

and solving the y?

aum · Answer

Not sure what you mean.  You don't have to solve for x.  Just substitute x = 56 and calculate y.

anonymous · Answer

Got it! Thanks, had a brain fart :P

anonymous · Answer

@aum

aum · Answer

yw.