Identify a common factor for the set of integers. {21, 91, 154, 217, 315} a) 3 b) 7 c) 9 d) 11

B) 7

Step-by-step explanation:

A common factor among several numbers is when we break down each number into prime factors, and one or more prime factors are common for the set of numbers.

We express each term in prime factors and see which is a common factor for all numbers set

When we decompose them into prime factors, we observe that 7 is the common factor

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

so what is the problem what are they asking you to solve

step-by-step explanation:

so what is the problem what are they asking you to solve