When crickets chirp 124 times a minute, it is about 68°F. When they chirp 172 times a minute, it is about 80°F. What is an equation that models this situation?

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!

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idk the answer i want to say 10 but then it would be equal so try 9 but then yeah so yeah we love edgen

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im not sure what the answer is

6.25 grams

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