The mapping diagram represents the costs of reserving a hotel room for different numbers of nights. Is the cost a function of the number of nights reserved? a Input, Nights Output, Cost $85 2 S170 3 -$255 $310 Yes Or No

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!

$6.42

step-by-step explanation:

answer: 12   they all have at least 28 days

step-by-step explanation: haha

pls refer ro the top for answer