Step-by-step explanation:

You need to remember the properties of exponents: multiplication adds the exponents, division subtracts the exponents.
If you multiply two powers with the same base, the result will be the base to the sum of the powers.
If you divide two powers with the same base, the result will be the base to the difference of the powers.
In your case you will this:

That is:

Or:

Option C:
is the slope of the line
Explanation:
The line passes through the points
and 
We need to find the slope of the line.
The slope can be determined using the formula,

Where the coordinates
and
are
and 
Let us substitute the points in the formula
Thus, we have,

Simplifying, we get,

Adding the numerator and denominator, we have,

Cancelling the negative terms, we get,

Thus, the slope of the line is 
Therefore, Option C is the correct answer.
Answer:
cos(
) or 0.339
Step-by-step explanation:
Answer:
(-3,-4)
Step-by-step explanation:
The vertex is the minimum or maximum or a parabola.
This is an upward opening parabola, so it has a minimum.
The minimum is (-3,-4)
Step-by-step explanation:
Area of rectangle =height×base
4 1/2×3 3/7=9/2×24/7=216/14=15 6/14=15 3/7