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Cloud [144]
3 years ago
10

One day, Fiona and Heidi each bought coins at a coin shop. The equation f(x)=3x+12 represents the value of Fiona’s coin, in doll

ars, x years later. The graph shows the value of Heidi’s coin, in dollars, x years later.
Select from the drop down menus to complete the statement.


When they bought their coins, _____

A- Fiona’s
B- Heidi’s

was worth ____
A- $3
B- $6
C- $9
D- $12

more than ____ coin.
A- Fiona’s
B- Heidi’s

Mathematics
2 answers:
Dvinal [7]3 years ago
5 0
1 a
2b
3b
This is the Sancerre I got
liq [111]3 years ago
3 0

Answer:

A- Fiona’s,

B- $6

B- Heidi’s

Step-by-step explanation:

Here, the equation that represents the value of Fiona’s coin, in dollars, x years later is,

f(x) = 3x + 12

Initially, x = 0,

Thus, the value of the coin when Fiona bought,

f(0) = 3(0) + 12 = $ 12,

Also, the graph represents the value of Heidi’s coin, in dollars, x years later.

By the graph, if x = 0 ( initially ),

y = 6

That is, when Heidi bought the coin its value is $ 6,

Also, 12 - 6 = 6

Hence, when they bought their coins, Fiona’s was worth $6 more than Heidi’s coin.

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Andreyy89

Answer:

K= 11

Step-by-step explanation:

You solve for K by subtracting 14 by 25.

25-14= 11

When k is pluged into k\geq 11 the statement is true because it is equal to 11.

When plugged into k+14\geq25;

11+14 =25.

That statement is also true because 25 is equel to 25.

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At a peanut butter factory, the daily production cost, C, for j jars of peanut butter is modeled by the graph below. What are th
Alexeev081 [22]
1) The graph

The corresponding graph shows a growing curve, its shape is kind of the right half of a parabola that opens upward and starts at the point (0, 2500).

The vertical axis corresponds to C(j), it contains divisions of 2500 units, and are marked 2500, 5000, 7500, 10000, 12500, 15000 and 17500.    

The horizontal axis corresponds to j, and the marks are 75, 150, 225, 300, 375, and 450.

2) Domain

Domain is the set of possible values for the independent variable, which is placed on the horizontal axis. This is the possible values of j.

They are all the positive numbers and zero, the the domain is:

All real numbers, j, such that j ≥ 0

3) Range

Range is the set of possible images (dependent variable); this is the possible values of C(j).

As you can see on the graph C(j) ≥ 2500

Then, the range is [2500, ∞).
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3 years ago
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Frank scored 75% on his spelling test with 40 questions. How many questions did he get right ?
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Answer:

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Step-by-step explanation:

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Solve each problem<br> -233 minus (-233)<br> 31 minus (-8)<br> -103 minus (-575)
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  • -233 -(-233)
  • -233 + 233
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2 years ago
John works two jobs. As a security guard he earns $8.50 per hour. As a landscaper he earns $14 per hour. One week John worked a
Rashid [163]

Answer:

John work as a security guard job <u>27 hours</u> and as a landscaper <u>33 hours</u>.

Step-by-step explanation:

Given:

John works two jobs.

As a security guard he earns $8.50 per hour and as a landscaper he earns $14 per hour.

One week John worked a total of 60 hours and earned $691.50.

Now, to find hours he work at each job.

Let the job of security guard be x hours.

And the job of landscaper be y hours.

So, the total hours John worked in a week:

x+y=60.

⇒ y=60-x.............( 1 )

<em>Now, the money earned by John in a week:</em>

8.50x+14y=691.50

<em>Putting the equation ( 1 ) in the place of y:</em>

⇒ 8.50x+14(60-x)=691.50

⇒ 8.50x+840-14x=691.50

<em>Moving variables on one side and the other we get:</em>

⇒ 840-691.50=14 x-8.50x

⇒148.50=5.50x

<em>Dividing both sides by 5.50 we get:</em>

⇒ 27=x

<u>As a security guard job he worked 27 hours</u><u>.</u>

Putting the value of in x equation ( 1 ) we get:

y=60-27

⇒ y=33.

<u>As a landscaper he worked 33 hours</u>.

Therefore, John work as a security guard job 27 hours and as a landscaper 33 hours.

5 0
3 years ago
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