Answer:
When we are dividing exponents, there is this rule:

So, in our case we have this:


1. -3x and -6x
2. 21 and -13
3. 21 and -13
4. -10b and 6b, 15 and -5
5. -20 and 30, 4c and -2c
The answer is 7/1, when you want to know a reciprocal, all you do to the fraction is flip it around. Hope this Helps!
Answer:
The correct option is 3.
Step-by-step explanation:
To find the slope of a line Ava wrote the expression
..... (1)
The formula to find the slope is
.... (2)
On comparing (1) and (2), we get


It means the value of y is 2 at x=1 and the value of y is 4 at x=3.
Therefore table 3 represents the Ava's line and option 3 is correct.
Here are the full questions with the answers underlined.