For 3x + 12 + x, do like terms:
4x + 12
For 4(3 + x), multiply
12 + 4x
They are both the same, just written in different ways. One is adding like terms and the other is multiplying with parentheses. Even though it may be switched around, it is still the same.
Hope this helps :)
Hello! quartiles divide data into fourths, and percentiles divide data into hundredths! hope this helps! ;)
Answer:
4.5 hours
Step-by-step explanation:
So, let's write a function p(x) which represents the total cost.
Let's let x represent the amount of hours.
The cost of a piece is a constant 10.
And there is a $8 fee per hour. In other words:
![p(x)=8x+10](https://tex.z-dn.net/?f=p%28x%29%3D8x%2B10)
We spent a total of $46.
So, substitute in 46 for p(x) and solve for x:
![46=8x+10](https://tex.z-dn.net/?f=46%3D8x%2B10)
Subtract 10 from both sides:
![36=8x](https://tex.z-dn.net/?f=36%3D8x)
Divide both sides by 8:
![x=36/8](https://tex.z-dn.net/?f=x%3D36%2F8)
Reduce:
![x=4.5](https://tex.z-dn.net/?f=x%3D4.5)
So, we spent about 4.5 hours.
Answer:
Hope this helps
Step-by-step explanation: