Answer:

Step By Step Explanation:
Apply Rule - (-a) = a

Multiply: 4 · 6 = 24

Expand 
= 
Simplify 
= 
━ Mordancy ━
Answer:
A = 19.625 inches
Step-by-step explanation:
formula for a circle is A = Pie * radius squared. 2.5 times 2.5 is 6.25 now multiply that by 3.14 to get 19.625 inches.
Answer:
a. 37
Step-by-step explanation:
Do 150 divided by 4 so you know how many tables there can be.
150/4
37.5 You can only have 37.5 tables so the awnser is A.37
I think that it is attempt. If i am wrong, sorry.
If you are working with time or days, you can't put in a negative value because if you are doing an experiment, you can't go back in time to do that experiment to gather data. (Time for the most part considered to be an input value so that's why I used it as an example.)