Answer:
B (ignore this its for 20 characters
The answer is D. The numbers for y have to be less than -3, which is shown using the less than sign, and they also have to be greater than 18, which is shown with the greater than sign.
Answer:
![\huge\boxed{\boxed{2}\cdot\boxed{2}\cdot\boxed{y}=4y}](https://tex.z-dn.net/?f=%5Chuge%5Cboxed%7B%5Cboxed%7B2%7D%5Ccdot%5Cboxed%7B2%7D%5Ccdot%5Cboxed%7By%7D%3D4y%7D)
Step-by-step explanation:
![-8y=-2\cdot\boxed{2}\cdot\boxed{2}\cdot \boxed{y}\\\\20y=\boxed{2}\cdot\boxed{2}\cdot5\cdot\boxed{y}](https://tex.z-dn.net/?f=-8y%3D-2%5Ccdot%5Cboxed%7B2%7D%5Ccdot%5Cboxed%7B2%7D%5Ccdot%20%5Cboxed%7By%7D%5C%5C%5C%5C20y%3D%5Cboxed%7B2%7D%5Ccdot%5Cboxed%7B2%7D%5Ccdot5%5Ccdot%5Cboxed%7By%7D)
Answer:
![\frac{72-\sqrt{323} }{90}](https://tex.z-dn.net/?f=%5Cfrac%7B72-%5Csqrt%7B323%7D%20%7D%7B90%7D)
Step-by-step explanation:
A unit rate simply means how many of one type of units you get per 1 other type of unit.
Examples of that:
![300\frac{l}{ s }](https://tex.z-dn.net/?f=%20300%5Cfrac%7Bl%7D%7B%20s%20%7D%20)
This is rate of fluid flow of some pump for example. It pumps 300 liters every second.
Other example:
![50 \frac{km}{h}](https://tex.z-dn.net/?f=50%20%5Cfrac%7Bkm%7D%7Bh%7D%20)
This is example for speed. Somebody is moving at 50 kilometers per hour (every hour he travels 50 kilometers)