I need help on two questions:
1. Stacy owns a hair salon and haircuts are $10. She charges hairdressers $20 per hour to rent a chair and serve clients. What is the minimum number of haircuts a hairdresser should give per hour to earn money at Stacy's salon?

Two

Three

Four

Five

Question

I need help on two questions:
1. Stacy owns a hair salon and haircuts are $10. She charges hairdressers $20 per hour to rent a chair and serve clients. What is the minimum number of haircuts a hairdresser should give per hour to earn money at Stacy's salon? 

 Two 

 Three 

 Four 

 Five

anonymous · Answer

Which investment produces a $40 daily profit for a game shop earning $2 profit from every game sold? 

 Vehicle with $120 daily operating cost, delivering 80 games per day 

 Inventory software with $10 daily operating cost, saving 30 games per day from theft 

 Game cleaning system with $5 daily operating cost, increasing sales by 15 games per day 

 Electronic billboard with $20 daily operating cost, increasing sales by 20 games per day

hero · Answer

For the first one

10x > 20

x > 2

But two is not the answer. x has to be greater than 2 in order for the hairdresser to earn money. If it is $10 per hair cut. Two hair cuts makes them only $20. So

hero · Answer

@HFeruson15, which answer choice is correct here?

anonymous · Answer

Five?

hero · Answer

That's a guess. All we needed was a number greater than 2. 

3 is greater than 2 so 

10(3) > 20
30 > 20

So for 3 haircuts, the hairdresser would make $30 minus $20 for rent = $10.

anonymous · Answer

Oh...Okay I get what your saying...I didn't even think about the rent

anonymous · Answer

Oh...Okay I get what your saying...I didn't even think about the rent

hero · Answer

Yes, they mention that the minimum number of haircuts is what they're looking for.

anonymous · Answer

Okay :) ...Do you know how to do the second one?

hero · Answer

You have to multiply the number of products sold times the $2. Then subtract the operating cost.

hero · Answer

Whichever result comes out to $40 is the correct answer.

anonymous · Answer

So do I divide the coast to the games per day ?

hero · Answer

I don't recall saying anything about dividing anything.

anonymous · Answer

Okay...So how do I find the result for each one?

hero · Answer

$\color\red{\text{MULTIPLY}}$ the number of products sold times the $2. Then $\color\indigo{\text{SUBTRACT}}$the operating cost.

anonymous · Answer

so Vehicle with $120 daily operating cost, delivering 80 games per day

hero · Answer

Yes that's the right one.

anonymous · Answer

YEAH! Thank you ^-^