Answer:
The function is given by:
t[c(h)] = 700h
Explanation:
Emma burns 350 calories per hour biking.
The function is given by:
c(h) = 350h.
Also, when her little sister tow in the bike then the she burn twice as many calories.
This could be represented by the function:
t(c) = 2c
where c is the number of calories burned per hour.
Now, we are asked to find the function that calculate he number of calories she will burn per hour while biking with her sister in the bike trailer i.e. we are asked to find the composition function:
![t(c(h))](https://img.qammunity.org/2020/formulas/mathematics/middle-school/flzftpw3la6ujsfraqzge38wyuclzxaolj.png)
Hence, we have:
![t(c(h))=t(350h)\\\\i.e.\\\\t(c(h))=2(350h)\\\\i.e.\\\\t(c(h))=700h](https://img.qammunity.org/2020/formulas/mathematics/middle-school/rntz3dmdlv052m9q1ll0fmupv5goqn1092.png)