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leva [86]
2 years ago
12

Jamie and Hudson took a road trip to the beach. Their total distance traveled after getting on the highway can be found using th

e function d(h)=55h+10, where h is the number of hours they have been driving on the highway.
1) Explain why the relationship between total distance and hours is a function.

2) Is this function continuous or discrete? Explain how you know.

3) If the girls can drive a maximum of 8 hours, what is the domain for the function? Explain your answer.

4) If the girls can drive a maximum of 8 hours, what is the range for the function? Explain your answer.

5) Create a graph that models this function. Be sure to include a title and to label your x- and y-axis with the variable names, but just x and y.

6) What is the slope of the function? What does it represent?

7) What is the y-intercept? What does it represent?
Mathematics
1 answer:
lukranit [14]2 years ago
5 0

The total distance is an illustration of a linear function.

<u>(1) Why the relationship is a function</u>

The relationship is a function because all input values of h, have exactly one corresponding output value of d

<u>(2) The function type</u>

The function is a discrete function, because the number of hours is an integer, and it cannot take decimal values (in this case)

<u>(3) The domain for a drive of 8 hours</u>

The domain is the set of time the girls drive.

So, the domain is: [0,8]

<u>(4) The range</u>

The function is given as:

d = 55h +10

When h = 0,

d = 55(0) +10 = 10

When h = 8,

d = 55(8) +10 = 450

So, the range is: [10,450]

<u>(5) The graph</u>

See attachment

<u>(6) The slope</u>

A linear function is represented as:

y = mx + c

Where:

m represents the slope.

So, by comparison:

Slope = 55

The slope in this case represents the distance travelled per hour

<u>(7) The y-intercept</u>

In (6) above, c represents the y-intercept.

So, by comparison:

c = 10

The y-intercept in this case represents the initial distance

Read more about linear functions at

brainly.com/question/15602982

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Answer:

11,500 at 2% and $6,000 at 12%.

Step-by-step explanation:

Let x represent amount invested at 2% and y represent amount invested at 12%.

We have been given that Theodore invests a total of $17,500 in two accounts. We can represent this information in an equation as:

x+y=17500...(1)

x=17500-y...(1)

We are also told that he invested $17,500 in two accounts paying 2% and 12% annual interest, respectively. After one year, the total interest was $950.00.

Interest earned at 2% in one year would be 0.02x.

Interest earned at 12% in one year would be 0.12y

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Upon substituting equation (1) in equation (2), we will get:    

0.02(17500-y)+0.12y=950

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350+0.10y=950

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\frac{0.10y}{0.10}=\frac{600}{0.10}

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Therefore, Theodore invested $6,000 at 12%.

Upon substituting y=6000 in equation (1), we will get:

x=17500-6000

x=11500

Therefore, Theodore invested $11,500 at 2%.

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Answer:

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