The area of a trapezoid can be found with this formula:

Where b1 and b2 are the bases and h is the height.
If we plug in what we know we can solve for the height.
We know that b1 = 52, b2 = 42, and A = 1833. Let's solve.
Mx+b=y
subtract b from both sides
mx=y-b
divide m in both sides
x=(y-b)/m
I.) 8
180 - 140 = 40.. divide that by 5 since it’s 5x, which’ ll leave you with 8.
Answer:
After 9 years, the population reach 4000.
Step-by-step explanation:
The given function P(t) represents the size of a small herbivore population at time t (in years).

We need to find the number of years after which population reach 4000.
Substitute P(t)=4000 in the above function.

Divide both sides by 1000.

Taking ln on both sides.

![[\because \ln e^x=x]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%5Cln%20e%5Ex%3Dx%5D)
Divide both sides by 0.16.


We need to find the number of years. So, round the answer to the next whole number.

Therefore, after 9 years, the population reach 4000.