Cynthia's 1st email arrived 9 days after she set up the notification. Her second email arrived 14 days after the first and emails continued to arrive every 14 days. Assume n is positive integer, and c(n) gives the number of days, what is the function after Cynthia set up the notification that her Nth email arrived

15 units use socratic

step-by-step explanation: 15 units

b

2

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b

b

3

+

7

b

2

+

14

b

+

6

%

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3

b

3

+

7

b

2

+

14

b

+

6

%

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!