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Mathematics 21 Online
OpenStudy (help_people):

@Nnesha please help.

OpenStudy (help_people):

My mom helped me on this one. She told me it is c.

OpenStudy (help_people):

A bicycle manufacturing company makes a particular type of bike. Each child bike requires 4 hours to build and 4 hours to test. Each adult bike requires 6 hours to build and 4 hours to test. With the number of workers, the company is able to have up to 120 hours of building time and 100 hours of testing time for a week. If c represents child bikes and a represents adult bikes, determine which system of inequality best explains whether the company can build 20 child bikes and 6 adult bikes in the week. No, because the bike order does not meet the restrictions of 4c + 6a ≤ 120 and 4c + 4a ≤ 100 No, because the bike order does not meet the restrictions of 4c + 4a ≤ 120 and 6c + 4a ≤ 100 Yes, because the bike order meets the restrictions of 4c + 6a ≤ 120 and 4c + 4a ≤ 100 Yes, because the bike order meets the restrictions of 4c + 4a ≤ 120 and 6c + 4a ≤ 100

TheSmartOne (thesmartone):

And how did your mom get C? Any work?

OpenStudy (help_people):

no she looked at the problem and then said c looked pretty good

OpenStudy (help_people):

that's why i am asking you guys because i do not know if she's right she did not explain anything.

TheSmartOne (thesmartone):

You can not solve this question by looking at it and just guessing.

TheSmartOne (thesmartone):

So it says that children's bike is c. And adult's bike is a.

TheSmartOne (thesmartone):

I never said that.

OpenStudy (help_people):

Ok, may we just work on the question please?

TheSmartOne (thesmartone):

So it says: "Each child bike requires 4 hours to build and 4 hours to test. Each adult bike requires 6 hours to build and 4 hours to test." "the company is able to have up to 120 hours of building time and 100 hours of testing time for a week." So first we have to find the restrictions for this equation. So we can make two equation testing hours for childrens bike + testing hours for adult's bike \(\le\) amount of testing time building hours for childrens bike + building hours for adult's bike \(\le\) amount of building time

TheSmartOne (thesmartone):

So one of our two equations are: testing hours for childrens bike + testing hours for adult's bike \(\le\) amount of testing time \(\sf 4c + 4a \le 100\) Make the second equation, using everything I have said so far.

OpenStudy (help_people):

\[4c+6a \le100\]

OpenStudy (help_people):

@TheSmartOne

OpenStudy (help_people):

i believe the answer is a

OpenStudy (help_people):

@TheSmartOne

TheSmartOne (thesmartone):

How would it be A if you said the second equation is \(\sf 4c+6a\le100\) Remember that your question says: "the company is able to have up to 120 hours of building time"

OpenStudy (help_people):

so if it means "able" it would be either c or d

OpenStudy (help_people):

d is the correct answer ^@TheSmartOne

TheSmartOne (thesmartone):

Nope.

TheSmartOne (thesmartone):

Correct your equation first.

OpenStudy (help_people):

what? it is not c is it, because you told me it was not @TheSmartOne

TheSmartOne (thesmartone):

I never said anything was correct or wrong. You need to fully work out your problem to get your correct answer. You can not do half of the work and assume what the answer is.

OpenStudy (help_people):

i did all the work you told me that the company is "able", so i new it was going to be yes... so it has to be c. let me look at the equations first

OpenStudy (help_people):

it is c, because the equations are good. Thank you

TheSmartOne (thesmartone):

Well good luck with your wrong answer then.

OpenStudy (help_people):

How is it wrong?

TheSmartOne (thesmartone):

You said that this was the second equation. Yet, I do not seem to find that in any of the answer choices. \[4c+6a \le100\]

TheSmartOne (thesmartone):

^ That equation is wrong btw.

TheSmartOne (thesmartone):

But 100 isn't correct.

OpenStudy (help_people):

4c+6a<=120

OpenStudy (help_people):

b is the correct answer?

OpenStudy (help_people):

i do not understand why

TheSmartOne (thesmartone):

So now our two correct equaitions are: \(\sf 4c + 4a \le 100\) and \(\sf 4c+6a \le120\) We are not completely done. But we have the 2 correct equations. So which 2 choices can we eliminate since they have the wrong equations?

TheSmartOne (thesmartone):

It seems like you do not want to know how to get the correct answer, but are rather interested in just getting the correct answer so you can move on with the rest of your questions.

OpenStudy (help_people):

we can eliminate b and d

TheSmartOne (thesmartone):

Correct.

OpenStudy (help_people):

@TheSmartOne

OpenStudy (anonymous):

nice

TheSmartOne (thesmartone):

So now to find out if it is A or C. We have to complete the last part in your question: "determine which system of inequality best explains whether the company can build 20 child bikes and 6 adult bikes in the week."

OpenStudy (help_people):

well the one that says"yes" makes more sense because it meets the restrictions. So that is a true statement.

TheSmartOne (thesmartone):

So plug in \(\sf c= 20 \\ a = 6\) Into both of the correct equations. And see if it works for both equations or if it doesn't.

OpenStudy (help_people):

116 is less than or equal to 120 is true

OpenStudy (help_people):

144 is less than or equal to 100 is false

OpenStudy (help_people):

@TheSmartOne i have things to do no offense i cannot be waiting on your time.

TheSmartOne (thesmartone):

No offense, but your question could have been solved faster if you didn't just throw random guesses.

TheSmartOne (thesmartone):

So you said that the two equations did not satisfy those 2 points. So that means the answer is no, because those bike orders does not meet their requirements. So your final answer is A.

TheSmartOne (thesmartone):

Next time, ask your mom to show how she got her answer. If she guesses it is only a 25% chance she got it correct. And that won't help you how to solve it. Sure you got the answer, but on test day, good luck.

TheSmartOne (thesmartone):

@help_people

OpenStudy (help_people):

ok

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