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elena-14-01-66 [18.8K]
3 years ago
12

Andre wants to buy an iPod. He got $50 for his birthday, but the iPod he wants costs $230, so he’s going to have to save up the

rest. His plan is to save $30 a month, after his birthday, until he has the money he needs. Let x be the time in months and y be the amount of money saved.
How much money does Andre have after 1 month?

$
30

What is the coordinate point used to represent this?

(
30
,
50
)

What is the slope in this situation?

$

Using the point from the information above, write the equation of this scenario in point-slope form. Do NOT include spaces in your answer.


How long will it take him to save up all the money he needs to buy the iPod ($230)?

It will take Andre
months to save the $230 he needs to buy the iPod.
Mathematics
1 answer:
DedPeter [7]3 years ago
3 0

Answer:I believe he will have 20$ left

Step-by-step explanation:

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Given the points (-4,8)and(6,-12)
MissTica

Answer:

1.

midpoint = ( \frac{ - 4 + 6}{2} , \:  \frac{ - 12 + 8}{2} ) \\  = (1, \:  - 2)

2.

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Read 2 more answers
In 1990 the average family income was about $ 39 , 000 , and in 2010 it was about $ 70 , 768 . Let x = 0 represent 1990, x = 1 r
iren2701 [21]

Answer:

<em />f(x) = 1588.4x + 39000<em />

f(15) = 62826

Step-by-step explanation:

Given

In 1990; Income= $39000

In 2010; Income= $70768

Solving (a): An equation in form of f(x) = ax + b

First, we need to determine the slope, a

a = \frac{y_2 - y_1}{x_2 - x_1}

Taking y as income and x as year index.

When x = 0; y = 39000

When x = 20; y = 70768

Substitute these values in the above formula

a = \frac{70768 - 39000}{20 - 0}

a = \frac{31768}{20}

a = 1588.4

Next, is to determine the formula using:

y - y_1 = a(x - x_1)

<em>Considering :When x = 0; y = 39000, we have</em>

<em />y - 39000 = 1588.4(x - 0)<em />

<em />y - 39000 = 1588.4x<em />

<em>Make y the subject of formula</em>

<em />y = 1588.4x + 39000<em />

<em />

<em>Express y as a function of x</em>

<em />f(x) = 1588.4x + 39000<em />

Solving (b): Income in 2005

<em>In 2005, x = 15</em>

So:

f(x) = 1588.4x + 39000 becomes

f(15) = 1588.4 * 15 + 39000

f(15) = 62826

3 0
3 years ago
A. This is the graph of a linear function.
seropon [69]

Answer:

B.  Graph of a one-to-one function.

Step-by-step explanation:

A one-to-one function will have a unique value, y, for each different value of x.  The graph displayed will have values very, very close to each other as x approaches ±4, but they won't be the same even at higher values of x.

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2 years ago
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