Answer:
Step-by-step explanation:
hey
The mean of the numbers is c. 67
5 and 6, the value is about 5.48
Answer:
Step-by-step explanation:
4x - 5(x + 3) Remove the brackets. Watch the - sign and -5*3
4x - 5x - 15 Combine the xs
-x - 15
Given:
The equations are
![y=-21x+9](https://tex.z-dn.net/?f=y%3D-21x%2B9)
![y=24x+8](https://tex.z-dn.net/?f=y%3D24x%2B8)
To find:
Which function is changing more quickly.
Solution:
The slope intercept form of a line is
![y=mx+b](https://tex.z-dn.net/?f=y%3Dmx%2Bb)
Where m is slope and b is y-intercept.
On comparing
with the slope intercept form, we get
![m_1=-21](https://tex.z-dn.net/?f=m_1%3D-21)
![|m_1|=|-21|](https://tex.z-dn.net/?f=%7Cm_1%7C%3D%7C-21%7C)
![|m_1|=21](https://tex.z-dn.net/?f=%7Cm_1%7C%3D21)
On comparing
with the slope intercept form, we get
![m_2=24](https://tex.z-dn.net/?f=m_2%3D24)
![|m_2|=24](https://tex.z-dn.net/?f=%7Cm_2%7C%3D24)
Since,
, it means the absolute rate of change of second function is greater than the first function.
Therefore, the second function is changing more quickly.