Question

Which graph represents the solution for the open sentence 4|p| – 7 < 9?

Answer 1

A. http://static.k12.com/calms_media/media/243000_243500/243097/2/18e6ced79e0227cda446f4196efab02fa07be382/MS_ALG_S1_05_04_quiz_Q5_B.gif

Answer 2

4|p| – 7 < 9
4|p| < 9 + 7
4|p| < 16
|p| < 4 which means: -4 < p < 4

Answer 3

B. http://static.k12.com/calms_media/media/243000_243500/243096/2/5a3252ccfcb09ea3aedfff1df7a70f329f7b5fc5/MS_ALG_S1_05_04_quiz_Q5_A.gif

Answer 4

C. http://static.k12.com/calms_media/media/243000_243500/243099/2/9a115facc730ce60e651ac7f2257d83189326d4a/MS_ALG_S1_05_04_quiz_Q5_D.gif

Answer 5

D. http://static.k12.com/calms_media/media/243000_243500/243098/2/9ddb53f610c075b064e512d2ad32e01995463e9c/MS_ALG_S1_05_04_quiz_Q5_C.gif

Answer 6

Which one do you think represents -4 < p < 4 ?

Answer 7

C

Answer 8

Or A

Answer 9

It is A. Because -4 and +4 are not included in the solution, there should be an open circle at -4 and +4. If the inequality has been -4 <= p <= 4 then there would be closed circles at -4 and +4.
But here it is -4 < p < 4 and so A.

Answer 10

Thanks You Helped A lot