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Mathematics 22 Online
OpenStudy (anonymous):

Can someone help me understand this: Cindy works in a cake shop and earns $42 per day. She earns an extra $4 for each cake she sells. If Cindy wants to earn at least $50 per day, which inequality shows the minimum number of cakes, n, that she should sell?

imqwerty (imqwerty):

ok what did u understand so far

OpenStudy (anonymous):

I understand she works at a cake shop ..

imqwerty (imqwerty):

lol ok what did u understand about her earning are u stuck somewhere in this part?

OpenStudy (anonymous):

Well I have to find the answer, but I don't understand the overall question in which it wants you to do to find it

OpenStudy (baru):

she gets a 42$ salary every day, and a bonus of $4 for each cake she manages to sell

OpenStudy (anonymous):

alright I can understand that

OpenStudy (danjs):

the total earnings for a day is the base wage 42 plus 4 more for each cake Day Earnings = 42 + 4*(#cakes) she also wants that to be at least 50 dollars (greater or equal to 50

OpenStudy (anonymous):

I think I get it now

OpenStudy (danjs):

k

OpenStudy (anonymous):

she would need to sell four but my answer choices are out of 42 + 4n ≥ 50, so n ≥ 4 42 + 4n ≤ 50, so n ≤ 4 That's what im not understanding I guess

OpenStudy (anonymous):

@DanJS

OpenStudy (anonymous):

@baru

OpenStudy (baru):

she would need to sell 2

OpenStudy (anonymous):

Now im confused again

OpenStudy (baru):

if she sells one cake, how much is her earnings for the day?

OpenStudy (anonymous):

4$

OpenStudy (danjs):

earns 42, wants 50 or more, 2 cakes will take her to exactly 50, so at least that

OpenStudy (baru):

4$ is the bonus

OpenStudy (anonymous):

so it would be 42 + 4n ≤ 50, so n ≤ 2

OpenStudy (danjs):

no she wants at least 50 per day greater or equal to 50

OpenStudy (danjs):

you just have the inequality the wrong way

OpenStudy (anonymous):

so it goes the other way?

OpenStudy (danjs):

yeah she wants her total earned money to be 50 or more dollars Total Earned \[Earned \ge $50\]

OpenStudy (anonymous):

thanks

OpenStudy (danjs):

this one is easy to look and see if you set up right, she starts at $42 earned, and wants at least $50, each cake will earn her $4 more

OpenStudy (danjs):

42 + 2 cakes sold is the minimum

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