Answer:
See below for answers and explanations
Step-by-step explanation:
<u>Part A</u>
10x - 12x - 3 does not equal -5x. Looks like what she did wrong was treating -3 as -3x and got her incorrect result that way
<u>Part B</u>
10x - 12x - 3 = (10-12)x - 3 = -2x - 3
Answer:
3
Step-by-step explanation:
Here we have the function

We want to find the following ratio:

Note that the limit of this for
is equivalent to the derivative of the function.
Here we have:

And

Therefore we have

And therefore,

I need more information for this, the y-axis!