A cake recipe says to bake the cake until the center is 180 degrees F, then let the cake cool to 120 degrees F. The table shows temperature readings for the cake. a. Given a room temperature of 70 degrees F, what is an exponential model for this data set?
b. How long does it take the cake to cool to the desired temperature?

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

from the sentence, "tomorrow morning, akiko will arrive an hour late" depicts a third person perspective because it doesn't use any pronoun to replace akiko, the subject of the sentence, and it is in singular form since akiko is only one person.

need more info

step-by-step explanation:

what do you mean by "representation"? graph? table? etc.