Answer:
D
Step-by-step explanation:
Triangle Side Theorem: The two smaller sides of a triangle
must be greater than the largest side
8 + 9 > 16
Answer: (x + 1) ( x + 4)
Step-by-step explanation:
For this case, the first thing we must do is define variables.
We have then:
x: number of pens
y: number of pencils
We now write the system of inequations:

The solution to the system of inequations is given by the shaded region.
Note: see attached image.
Try 1(18) / 2
Just multiply 1 by 18 and divide 18 by 2.
Then we have 9!