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

there are no figures how am i supposed to answer this question

step-by-step explanation:

every 5 customers that walk in, only 2 buy popcorn.

step-by-step explanation:

basically 2/5.

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