D ) x = 0 and x = 3 π / 4
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Answer:

Step-by-step explanation:
The applicable rules of exponents are ...

Your ratio simplifies to ...

_____
Please note that simplifying the constants, -8/10 to -4/5, eliminates half the answer choices. Since exponents are only multiplied when a power is raised to a power, you can pretty much eliminate the second choice as being unreasonable. ((a^b)^c = a^(bc))
Step-by-step explanation:
b. what is the perimeter of the rectangle in terms of k?
Length of circumference is 2πr
2 π r and r is equal to 2 cm
I.e 12.5 cm