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Mathematics 17 Online
OpenStudy (anonymous):

Solve. 8x + 4 ≤ –20 A. x ≥ –2 B. x ≤ –3 C. x ≥ –3 D. x ≤ –2

OpenStudy (anonymous):

@thomaster

OpenStudy (unknownunknown):

How are you baby angel?

OpenStudy (anonymous):

...

OpenStudy (unknownunknown):

The answer is B.

OpenStudy (anonymous):

r u sure

OpenStudy (unknownunknown):

Let's work through it together. So, 8x + 4 <= -20. What happens if we subtract 4 from both sides?

OpenStudy (anonymous):

8x<=-24 X<=-3

OpenStudy (anonymous):

subtract 4 from -20?

OpenStudy (anonymous):

I got -24

OpenStudy (unknownunknown):

That's right. So we're left with 8x <= -24. Sound okay with you so far?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

8x-4?

OpenStudy (unknownunknown):

Now what happens if we divide both sides by 8?

OpenStudy (anonymous):

u get -3

OpenStudy (unknownunknown):

Nope, remember we subtracted 4. So 4-4 = 0. To get 8x-4, we'd need to subtract 8.

OpenStudy (unknownunknown):

Exactly. And so -3 is your answer, x <= -3.

OpenStudy (anonymous):

Thanks! :D

OpenStudy (unknownunknown):

Np ;p

OpenStudy (anonymous):

Gave u a medal im ur fan now

OpenStudy (unknownunknown):

Thanks, I'm happy you're a fan.

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