Question

Deirdre works for a moving company. Her job includes giving clients a price for their move. Deirdre

= 4r which gives the number of hours h to pack up a number of rooms r. She has
second function, c(h) = 40h, that gives the price c for the number of hours of packing h.
What is the function that gives the price e for a number of rooms r?
function, h(r)
c(r) = 160r
c(r) = 40r +4
c(r) =36r
c(r) = 10r

Answer 1

Given:

The function for the number of hours h to pack up a number of rooms r is

`h(r)=4r`

The function for the price c for the number of hours of packing h is

`c(h)=40h`

To find:

The function that gives the price c for a number of rooms r.

Solution:

From the function
`h(r)=4r`, we get the number of hours to pack up a number of rooms r.

From the function
`c(h)=40h`, we get the price for the number of hours of packing h.

Now, to find the price for number of rooms r, substitute the value of h in
`c(h)=40h` from function
`h(r)=4r`.

`c(h(r))=40(4r)`

`c(r)=160r`

Therefore, the correct option is A.