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Mathematics 8 Online
OpenStudy (anonymous):

Lucia wants to buy some posters over the Internet. Each poster costs $6.67 and has a shipping cost of $9.99 per order. If Lucia wants to spend no more than $30 for her posters, which inequality shows the maximum number of posters, p, that she can buy?

OpenStudy (anonymous):

Please help im new to openstudy

Directrix (directrix):

Let p be the number of posters Lucia will buy. $6.67 * p + $9.99 < or = $30.00

OpenStudy (anonymous):

Im not sure if I understand

OpenStudy (anonymous):

would this be the answer ? 9.99 − 6.67p ≤ 30, so p ≤ 2

Directrix (directrix):

Would you post the options? That might help.

OpenStudy (anonymous):

Yes

OpenStudy (anonymous):

9.99 − 6.67p ≤ 30, so p ≤ 2 9.99 + 6.67p ≤ 30, so p ≤ 3 9.99p + 6.67p ≤ 30, so p ≤ 4 9.99p − 6.67p ≤ 30, so p ≤ 5

Directrix (directrix):

I am thinking this: $6.67 * p + $9.99 ≤ $30.00

Directrix (directrix):

These two cannot be correct because $9.99 is the shipping cost per order, not per poster: 9.99p + 6.67p ≤ 30, so p ≤ 4 9.99p − 6.67p ≤ 30, so p ≤ 5

Directrix (directrix):

The correct answer is one of these two: 9.99 − 6.67p ≤ 30, so p ≤ 2 9.99 + 6.67p ≤ 30, so p ≤ 3

OpenStudy (anonymous):

would it be p< 3 ?

Directrix (directrix):

9.99 + 6.67p ≤ 30 where p ≤ 3 looks promising. Let's check the other option.

OpenStudy (anonymous):

9.99 − 6.67p ≤ 30, so p ≤ 2

OpenStudy (anonymous):

this is confusing me

Directrix (directrix):

9.99 − 6.67p ≤ 30, so p ≤ 2 That option subtracts the cost of the posters from the shipping fee. I don't see how that could be correct.

Directrix (directrix):

This is the correct equation: 9.99 + 6.67p ≤ 30 What confuses me is the stuff added about p.

OpenStudy (anonymous):

so I think B. is correct

Directrix (directrix):

I think this is correct: 9.99 + 6.67p ≤ 30, so p ≤ 3 It is the only one where the inequality makes sense.

OpenStudy (anonymous):

Thanks

Directrix (directrix):

You are welcome, And, welcome to OpenStudy.

OpenStudy (anonymous):

Could you help me with 4 less complicated answers?

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