HELP ASAP!! PLEASE ANSWER!

factor out 5 out of 20x+55

and the answer is 5(4x+11)

a) 2

b) 3

c) 10

Step-by-step explanation:

Let U represent the universal set of all compact discs Steve has in his collection

let S represent the set of compact discs on which Simon sings and

let G represent the set of compact discs on which Garfunkel sings

⇒Given data can now be represented as:

a)

n(S-G) = n(S) - n(S∩G) = 7-5 = 2

b)

n(G-S) = n(G) - n(S∩G) = 8-5 = 3

c)

number of compact discs featuring at least one of the two artists = total number of compact discs - the number of compact discs not featuring any of the artists = n(U) - n((S∪G)') = 25 - 15 = 10