Answer:
Isolate the variable by dividing each side by factors that don't contain the variable.
p
=
n
12
+
3
8
Step-by-step explanation:
If I've understood your question, you're asking about this:

A number raised to a negative power is the same as the inverse of that number raised to the positive power. Basically the number moves from the numerator to the denominator or the denominator to the numerator. So 1/(3^-2) is the same as 1 / (1/3^2), which is the same as 3^2. That means what you have here is 4 x 3^2, which is 36.
Answer:
Step-by-step explanation:
10r - r-6r+11 - Constant = 11 & coefficient = r
19-5n-8+14 - constant = 8,14,19 & coeff = n
-5-13y-2y-18 - constant = -5,18 & coeff = y
8a-7b+1-2b+3a - constant = 1 & coeff = a,b
11x-4y+2x+8 - constant = 8 & coeff = x,y
I believe the correct answer would be A, B and C. For A, (xy^2)^2= x^2 y^4, we distribute the exponent on the outermost side to the inner ones and multiplying it to the exponent of each variable. For B, we can combine the variables since they have the same base and we add their exponents. For C, when the exponent of a variable is negative it means it is 1 over that term.