Question

Natalie works in a toy shop and earns $43 per day. She earns an extra $3 for each toy she sells. If Natalie wants to earn at least $70 per day, which inequality shows the minimum number of toys, n, that she should sell?
43 + 3n ≥ 70, so n ≥ 9
43 + 3n ≤ 70, so n ≤ 9
43 + 3n ≥ 70, so n ≥ 24
43 + 3n ≤ 70, so n ≤ 24

Answer 1

@VeritasVosLiberabit last one :P

Answer 2

the inequality will need to be greater than or equal to 70 because that is the minimum required to earn 70$ per day

Answer 3

ok so i can already remove the less then ones

Answer 4

Correct. Now you need to analyze the difference between the two remaining A and C

Answer 5

mmhh

Answer 6

The difference being the n values associated with the inequalities. This requires performing a bit of algebra by solving for n. Treat the inequality sign just like an equals sign.

Answer 7

ok

Answer 8

so how would I get to the answer then?

Answer 9

im like the worst with these types of questions sorry:/

Answer 10

Solve the equation using algebra just like a normal algebraic equation.

Answer 11

i mean how would I do that im the worst with these questions...

Answer 12

\[43+3n \ge 70\]
solve for n

Answer 13

oh ok

Answer 14

man i dont know :(

Answer 15

@VeritasVosLiberabit i have no idea :/

Answer 16

here @KennyVanGemert solve this then:
43+3n=70

Answer 17

hm

Answer 18

Is it just the sign that is throwing you off?

Answer 19

idk i think its trying to figure the N out

Answer 20

and the sign

Answer 21

23?

Answer 22

tell me where you are having difficulty. You have to isolate n on one side of the equation and then isolate the numbers on the otherside.

Answer 23

can you solve this?

x+4=5?

Answer 24

the n

Answer 25

1+4=5

Answer 26

ah you are solving by inspection.
can you solve this one then?
2x+6= 34?

Answer 27

i think so

Answer 28

ok show me

Answer 29

i think its 28 because 28+6=34

Answer 30

Ok so you are still soving by inspection. You should be solving these algebraically

Answer 31

im the worst at these idk really how to do that

Answer 32

I will show you

Answer 33

hmm let me look at that a few more times hang on

Answer 34

the key is to try an isolate the value of x by performing algebraic operations on both sides of the equation until you get a value.

Answer 35

oh ok i think i get it let me try it with the question now

Answer 36

ok sure

Answer 37

43+3n=70 just posting this so i can see it

Answer 38

43+3n-3=67

Answer 39

then u have the 43 and 67

Answer 40

You want to try and isolate n. So what is the first step you should start with?

Answer 41

um subtracting the 3 from the 70

Answer 42

the three is attached to 3n since n is mutiplied by 3 so that isn't where to start

Answer 43

ohhh ok so u start with the 43

Answer 44

correct

Answer 45

ohhh ok let me try this now

Answer 46

so then you do 70-43 and get 27?

Answer 47

perfect

Answer 48

now you should have 3n=27. What next?

Answer 49

umm lemme look

Answer 50

u would do hm

Answer 51

hm?

Answer 52

im trying to think xD

Answer 53

would u do division? i dont think u do but would u?

Answer 54

9!!!!!

Answer 55

That's actually right. Why don't you think it's correct/

Answer 56

that's it

Answer 57

i was dividing wrong

Answer 58

soo it would be A

Answer 59

there you go. So then the answer is clearly A

Answer 60

well done

Answer 61

wow thankk u soooooooooooooooooooooo much if i had 100$ i would give it to u thank u soooooooooooooooooooooooooooooooooooooooooooooooo much

Answer 62

ok im gonna go do the easy ones thank u again

Answer 63

you're welcome.