In 2010, the estimated population of New York City was 8.18 × 106 people. The population of the entire state that same year was about 2.37 times this number. Which expression shows the approximate population of the state of New York in 2010?

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8