Answer:
Given function:
t(s) = 3s + 20
where:
- t(s) = number of palm trees grown
- s = number of seeds planted
Given function:
s(d) = 20d
where:
- s(d) = number of seeds planted per day
- d = number of days
To determine the composite function that represents how many palm trees Carlos can expect to grow over a certain number of days, simply substitute s = 20d into t(s) = 3s + 20:
⇒ t(d) = 3(20d) + 20
⇒ t(d) = 60d + 20
The unit of measurement is how many palm trees Carlos can expect to grow over a certain number of days:
[tex]\sf \dfrac{palm \ trees}{days}[/tex]
