The line underneath the inequality line(arrow) means p is less than OR EQUAL to 21.
An example off the top of my head would be, Rachel just started a new job that pays 7 dollars per hour. She only worked 3 hours and decided she wanted to go to the mall to buy some clothes. How much money does Rachel have to spend?
And your answer is right there
Answer:

Step-by-step explanation:
You factor out the common term first.
You should get the equation below.

then you get rid of the negative inside
and will be simplified to this.

Answer:
16
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
if these are fractions than its A.
2x-4=2
4x-5=5/4
X plus y plus z equals 180. A triangles angles should ALWAYS add to 180. No ands or buts.