MATHEMATICS MIDDLE SCHOOL

Are there any values of x or y which are not possible in the function

Answers

Answer 1
Answer: You must realize that it depends on the function ...
something that you've kept hidden from us.

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Generating random sample

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Welp. I guess this is free points too?

60 points on the line! If you can do this paper! Only 2 questions!

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so y=mx+b
the 'm' part means the slope which is found by 'rise/run'
a. y=2x+3 or y=2x+3
b. y=-1x+6
c. i'm not sure what this part means
d. this means 'what values will work for x and y in both equations at once so
y=-x+6 and y=2x+3
y=-x+6
add x to both sides
x+y=6
subtitute 'y=2x+3' for y in x+y=6
x+(2x+3)=6
collect like terms
3x+3=6
subtract 3 from both sides
3x=3
divide both sides by 3
x=1
sibtitue into x+y=6
1+y=6
subtract 1 from both sides
y=5

(1,5) is the solution (x,y)


Question 2
so amount of peanuts (x) =60%
ammount of almonds (y)=40%
y=2(1/3x) or y=2/3x
so there is a mixture that is8/10 almonds
for
a. i'm not sure about this one
b. so 60% of 5 pounds=3 pounds
40% of 5 pounds=2pounds
we need to find out how many pounds, times 8/10, = 2pounds

 she will need 2.5 pounds of the pure peanuts and 2.5 pounds of the almond-peanut mixture

Kailey wants to buy 4 pencils and 3 notebooks.witch expression shows how to find the total cost of 4 pencils and 3 notebooks. a. 3($0.50) + 4($2.25)
b.4($0.50) - 3($2.25)
c.4($0.50) + 3($2.25)
d.4($0.50) X 3($2.25)

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the answer is either A or C. I don't know what the price is of each individual notebook and pencil, so this is the most I can narrow the answer down to 

Which statement explains why –27 is the opposite number of 27? Answer Choices They are the same quantity with different signs. They are an equal distance from 1 on the number line. They are both greater than 0. They are odd numbers.

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Now... -27 and 27 are equally the same number, but in different signs, but they are also same distance from each other. So i'd say: They are the same quantity with different signs.
"They are the same quantity with different signs" is the answer, 27 and -27 are the same  number ( quantity) just one is a positive number and the other is a negative number.

Students at hammond middle school are raising money for the end of the year school party. they decide to sell roses for valentines day. they also need $60 to buy ribbon and paper to protect the roses as well as materials for advertising the sale. they sell each rose for $1.30a. how many roses must they sell to break even
b. what is the students profit if they sell 50 roses? 100 roses? 200 roses?

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60÷1.30 = 46.15 ≈ 47
They would need to sell 47 roses to break even.
50×1.30 = 65 = $5 profit.
100×1.30 = 130 = $70 profit
200×1.30 = 260 = $200 profit

if f(x)=2x+1,what is f(-3)


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f(x)=2x+1\n\nx=-3\n\nf(-3)=2\cdot(-3)+1=-6+1=-5
This just means substitute -3 as x, so its -5
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