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mojhsa [17]
3 years ago
11

The function below show how much Jayna and Hannah charge for babysitting. Which statement best compares the two plants?

Mathematics
2 answers:
den301095 [7]3 years ago
5 0

Answer:

The statement that best compares the two plan is:

  • Jayna charges a lower hourly rate than Hannah.

Step-by-step explanation:

Let d denote the number of dollars earned.

h denote the number of hours they babysits.

The function that is obtained by<u> </u><u>Jayna's Plan</u><u> </u>is:

                d=3h+10

Hence, the rate per hour Jayna charge is: $ 3.

( Since, the slope or rate of the given function is 3

By comparing with the slope-for y=mx+c where m is the slope and c is the intercept)

( Since, she charge $ 10 for the first hour and then additional $ 3 for each hour she baby sits)

<u>Hannah Plan:</u>

                  d=7h

Hence, the rate per hour Hannah charge is: $ 7

1)

Hannah charge a $ 7 initial fee.

This option is incorrect.

Since when h=0

we get:

d=0

i.e. Hannah charge no initial fee.

2)

if h=1

then,

Money earned by Jayna is:

d=3×1+10=$ 13

Money earned by Hannah is:

d=7×1=$ 7

Hence, if they baby sit for only one hour then Jayna will earn more.

3)

when h=5

Then ,

Money earned by Jayna is:

d=3×5+10=$ 25

Money earned by Hannah is:

d=7×5=$ 35

If they baby sit for 5 hours then Hannah will earn more.

4)

Jayna charges a lower hourly rate than Hannah.

Since, the rate of charge by Hannah is more( i.e. $ 7) then Jayna (i.e. 3)

Natasha2012 [34]3 years ago
3 0

Answer:

Jayna charges a lower hourly rate

Step-by-step explanation:


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Find the distance between P(2, 8) and Q(5, 3).
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Answer:

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d = √  ((X2-X1)2+(Y2-Y1)2)

d = √ (5-2)2+(3-8)2

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d = √ (9+25)

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The midpoint of two points is given by the formula

Midpoint= ((X1+X2)/2,(Y1+Y2)/2)

Find the x value of the midpoint

Xm=(X1+X2)/2

Xm=(2+5)/2=3.5

Find the Y value of the midpoint

Ym=(Y1+Y2)/2

Ym=(8+3)/2=5.5

The midpoint is: (3.5,5.5)

Graphing the two points, midpoint and distance

P1 (2,8)

P2 (5,3)

Midpoint (3.5,5.5)

The length of the black line is the distance between the points (5.8309518948453)

Find the slope of the line connecting the two points

Slope =  (Y2-Y1)  =  (3-8)  =  (-5)  = -1.66666666666667

(X2-X1) (5-2) (3)

Find the equation of the line passing through the two points

The general equation for a straight line is

y = mx + b

Where m represents the slope of the line which we found in the previous step to be -1.66666666666667

y = -1.67x + b

We substitute x and y for the values from one of our points (2,8)

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Knowing both b and m, we can contruct the equation of the line

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X and Y intercepts

The x-intercept is a point on the graph where y is zero

Using the equation we found in the previous step and substituting zero for y

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0= -1.67x+ 11.33

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The x intercept for this straight line is 6.80

The y-intercept is a point on the graph where x is zero

Using the equation we found in the previous step and substituting zero for x

y= -1.67×0+ 11.33

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The y intercept for this straight line is 6.80

References

refernce image showing the distance between two points on the xy plane

Step-by-step explanation:

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