2. Heritage High School has 1920 students. Four students started a rumor that spread logistically so that S(1)=1920/(1+63e^-9t)
a. How many people heard the rumor initially?
b. How many days would it take for 1130 students to have heard the rumor?

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation:

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!

step-by-step explanation:

shorter then the tree