13a.) If you're dividing and the base (in this case the base is 10) is the same, subtract the exponents.

13b.) If you're multiplying and the base is the same, then you add the exponents:

13c.) This is similar to 13b:
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Hi my lil bunny!
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A) Let's solve for x. 
Step 1: Add 7y to both sides.

Step 2: Divide both sides by -3.


Answer : 
~~~~~~~~~~~~~
B) Let's solve for x. 
Step 1: Add 7y to both sides.

Step 2: Divide both sides by -10.


Answer : 
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If this helped you, could you maybe give brainliest..?
❀*May*❀
Answer: In the text
Step-by-step explanation:
The length of a rectangle is twice the width. The area of the rectangle is 74 square units. Notice that you can divide the rectangle into two squares with equal area. How can you estimate the side length of each square? Estimate the length and width of the rectangle.
Answer:
I believe its c.
Step-by-step explanation:
There using the equation mx+b=y. M is the slope(4), b is the y intercept (3).