A. This question asks us to solve the equation for P. This also means to isolate this variable.
S=Ph+2B
S-2B = Ph
(S-2B)/h = P
B. Using the information, we plug this into the perimeter equation, where h = 4, S=96 and B = 8
(96-2(8))/4 = P
80/4 = P
P = 20 meters²
Answer:
![\frac{3x^{4}+10x^{2} }{5}](https://tex.z-dn.net/?f=%5Cfrac%7B3x%5E%7B4%7D%2B10x%5E%7B2%7D%20%7D%7B5%7D)
Step-by-step explanation:
![2x^{2} + x^{3}(\frac{6x}{10} )](https://tex.z-dn.net/?f=2x%5E%7B2%7D%20%20%2B%20x%5E%7B3%7D%28%5Cfrac%7B6x%7D%7B10%7D%20%29)
![2x^{2} + x^{3}(\frac{3x}{5} )](https://tex.z-dn.net/?f=2x%5E%7B2%7D%20%20%2B%20x%5E%7B3%7D%28%5Cfrac%7B3x%7D%7B5%7D%20%29)
![2x^{2} + \frac{3xx^{3}}{5}](https://tex.z-dn.net/?f=2x%5E%7B2%7D%20%20%2B%20%5Cfrac%7B3xx%5E%7B3%7D%7D%7B5%7D)
![\\ 2x^{2} + \frac{3x^{4}}{5}](https://tex.z-dn.net/?f=%5C%5C%202x%5E%7B2%7D%20%20%2B%20%5Cfrac%7B3x%5E%7B4%7D%7D%7B5%7D)
![\frac{5(2x^{2} )}{5} + \frac{3x^{4}}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B5%282x%5E%7B2%7D%20%29%7D%7B5%7D%20%20%20%2B%20%5Cfrac%7B3x%5E%7B4%7D%7D%7B5%7D)
![\frac{5(2x^{2} )+3x^{4}}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B5%282x%5E%7B2%7D%20%29%2B3x%5E%7B4%7D%7D%7B5%7D)
![\frac{10x^{2} +3x^{4}}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B10x%5E%7B2%7D%20%2B3x%5E%7B4%7D%7D%7B5%7D)
![\frac{3x^{4}+10x^{2} }{5}](https://tex.z-dn.net/?f=%5Cfrac%7B3x%5E%7B4%7D%2B10x%5E%7B2%7D%20%7D%7B5%7D)
The appropriate description is A).
Mrs. Liang will be sampling the patron population with children who use reading groups. Unless that is the entire patron population, which we suspect it is not, her sampling method will be unrepresentative of the patron population as a whole.