Answer:
9in2
Step-by-step explanation:
the 2 is an expononent.
Answer:
the water is 2.2 meters deep
Step-by-step explanation:
11 is b because the bottom needs to be 5 to dived the amount by 5 minutes and the top is the amount of words she types in 5 minutes
I will assume that we are trying to find the slope between (-9,2) and (9, 2)
The slope's equation ⇒ 
<u>Let's set the variables</u>:
(x1, y1) --> (-9, 2)
(x2, y2) --> (9, 2)
<u>Now let's plug them in:</u>

<u>Thus the slope of the line is 0.</u>
Hope that helps!
The mistake is in line 2, the parenthesis means multiplication therefore it has to be 3x