A random survey found that 6 of the 20 people surveyed prefer listening to rock music. Based on those results, about how many
people prefer listening to rock music from a population of 100 people?
A. 18
B. 24
C. 48
D. 30

30%

Convert fraction (ratio) 6 / 20 30%

Step-by-step explanation:

The strategy here is to see how many times the "percent number" (in this case, 25) goes into 100, and then count by that number until we reach 100-the whole thing.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,

the formula of a midpoint between a abd b: