Question

Which is the solution set of this equation? |x – 6| = 15 A. {-9, 21} B. {-15, 15} C. {9, 21} D. {-9, -21} E. {-6, 6}

Answer 1

A

Explanation:

| x-6| = 15 , check if this is true for the given x values

for x= -9 we have | -9-6| = 15 true

for x= 21 we have | 21 -6| = 15 true

so A is a solution set

for x= -15 we have | -15-6| = 15 false

so B is not a solution set

for x= 9 we have | 9-6| = 15 false

so C is not a solution set

for x= -9 we have | -9-6| = 15 true

for x= -21 we have | -21-6| = 15 false

so D is not a solution set

for x= -6 we have | -6-6| = 15 false

so E is not a solution set

Answer 2

A. -9, 21

Explanation:

Use m.a.t.h.w.a.y and you will get the answer!