The first 5 numbers of a sequence are shown below. Which of the following functions produces the sequence with n: (1, 2, ..., n) ?

26, 35, 44,53,62,..

A. f(n) = 9n+ 26
B. f(n) - 26 - 9n
C. f(n) = 9n+ 17
D. f(n) = 17 -9n

C)

Step-by-step explanation:

f(n) = 26 + 9(n-1)

answer: huh

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!