Question 1:
4x+28
question 2:
18x-27
Answer:


Step-by-step explanation:



The interval notation will be:

The contrary,

is 
Answer:
$2,400
Step-by-step explanation:
We get 10% of 4,000 by dividing 4,000 by 10.
4,000 ÷ 10 = 400
To get the amount that 4,000 is subtracted by we multiply 400 by 4.
400 × 4 = 1,600
To get the answer we subtract 4,000 by 1,600.
4,000 - 1,600 = 2,400
Hope I helped!
You answer is 12 because that is where on the graph it is the most constant