Addition and subtraction of polynomials

Question

y = 0.036x² - 2.3x + 62.54

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 60 years old die each year? For the purposes of this problem, please round your answer to a whole number

Answer 1

y=.036x^2-2.3x+62.54

x=60

y=.036*60^2-2.3*60+62.54

.036*3600-138+62.54=

129.6-138+62.54=54.14=54