Answer:
20%.
Step-by-step explanation:
That is (60 - 50) / 50
= 10/50
= 1/5
To convert to a percent we multiply by 100:
= 20%.
It’s super self explanatory it’s right there
Answer: Terri brought 10 more centimeters of rope than Gracie.
Step-by-step explanation:
When you have a negative exponent, you move it to the other side of the fraction to make the exponent positive.
For example:
or 
or y²
So:

Your answer is B
Patterns allow someone to make educated guesses.