Question

Which conjunction or disjunction is equivalent to the open sentence |a – 7| ≤ 5?

A.
a – 7 ≥ 5 and a – 7 ≤ – 5

B.
a – 7 ≤ 5 and a – 7 ≥ – 5

C.
a – 7 ≥ 5 or a – 7 ≤ – 5

D.
a – 7 ≤ 5 or a – 7 ≥ – 5

Answer 1

After this i have 4 more questions

Answer 2

I need help within the next half-hour :0

Answer 3

Anyone?

Answer 4

Can someone PLEASE help me?

Answer 5

I think you take the left hand bit out of the absolute values and take the plus/minus values of the right hand side. (at least that's what I'm reading here: http://www.purplemath.com/modules/absineq.htm )

for example here, it'd be
|a – 7| ≤ 5
a - 7 <= 5
a - 7 <= -5

Answer 6

I'll read up on that, thanks!