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Tresset [83]
3 years ago
7

Sheri's brother gave Sam his collection of stamps when she left for college. At that

Mathematics
1 answer:
pychu [463]3 years ago
6 0

Answer: $70 per year.

Step-by-step explanation:

Let's say that x is the number of years that has passed and y is how much the stamp is worth.

So we know that in zero years the stamp was worth $420 because that is the time Sheri gave her brother Sam the stamp. That could bring up the coordinates  (0,420) .

Now we know that in 8 years it was worth $980 and that could be the coordinates (8,980)

To find the rate of change we need to find the different between the y value and divide it by the difference in the x values.

420 - 980 = -560

 0-8 = -8

-560/-8 = 70

The rate of change is 70 which means that it grew by $70 every year.

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You distribute the problem as shown;
2(x+5) 2 times x+2 times 5=2x+10
The answer is 2x+10!
5 0
3 years ago
6.493 rounded to the hundredths
Nana76 [90]
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7 0
3 years ago
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Given function of f(x) = 2x - 1 and fg(x) = 10x + 3, find the function of g(x)​
denis-greek [22]

Answer:

The function of g(x) = 5x + 2

Step-by-step explanation:

Let us use the composite function to solve the question

∵ f(x) = 2x - 1

∵ f(g(x)) = 10x + 3

→ f(g(x)) means substitute x in f(x) by g(x)

∴ f(g(x)) = 2[g(x)] - 1

→ Equate the two right sides of f(g(x))

∴ 2[g(x)] - 1 = 10x + 3

→ Add 1 to both sides

∴ 2[g(x)] - 1 + 1 = 10x + 3 + 1

∴ 2[g(x)] = 10x + 4

→ Divide each term into both sides by 2

∵ \frac{2[g(x)]}{2} = \frac{10x}{2} + \frac{4}{2}

∴ g(x) = 5x + 2

∴ The function of g(x) = 5x + 2

7 0
3 years ago
5g + 4(-5+3g) = 1 - g
Korvikt [17]
5g + 4(-5 + 3g) = 1 - g 
5g - 20 + 12g = 1 - g 
 17g - 20 = 1 - g 
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3 years ago
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Pomocy!!mam jeszcze kilka pytan. ​
Karo-lina-s [1.5K]

Answer:

6758

Step-by-step explanation:

Number of steps in Monday = 8565 steps

Number of steps in Tuesday = 14707 steps

Number of steps in Wednesday = 15323 steps

Number of steps in Thursday = 9788 steps

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Formula for range = Highest value – Lowest value

Here, highest value = 15323 and lowest value = 8565

Range of the number of steps = 15323 – 8565 = 6758

Hence, range of the number of steps is 6758 steps.

4 0
3 years ago
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