The mean average temperature for Fairbanks, Alaska, is 23° F. The monthly average temperatures vary between 31.5° above and below this value. If t= 0 represents February, the phase shift of the sine function is 2. a. Write a model for the average monthly temperature in Fairbanks, Alaska. b. According to your model, what is the average temperature in September?

i think it's b

step-by-step explanation:

because the graph is 2 above (0,0)

the answer is d

step-by-step explanation:

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl