First you subtract the $8 from the $20 so you have $12 that you bough 6 highlighters with. Then you do the math and each highlighter cost $2
Scale factor for volume = A^3:B^3
(1:4)^3 = 1:64. The volume is 64x bigger.
By definition we have to:
A set has under an operation if performance of that operation on set members always produces a member of the same set; in this case we also say that the set is closed under the operation.
For this case we have the following polynomials:

Multiplying we have:

The product of two polynomials is also a polynomial.
Answer:
d
is a polynomial
Answer : AB and DE are the secants
Explanation: Because they both intersect the circle in exactly 2 points