Write a rule for linear function in the table.

x f(x)
1 3
2 2
3 1
4 0

a. f(x) =4x
b. f(x)=x-4
c. f(x)=x+4
d. f(x)=4-x

correct answer:

i^31 = -i

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!