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sveticcg [70]
3 years ago
12

20. If a certain linear function f(x) is evaluated at 0, the answer is 4.

Mathematics
1 answer:
bija089 [108]3 years ago
7 0

Answer:

y = (1/3)x + 4

Step-by-step explanation:

Two points on this line are (0, 4) and (3, 5).

As we move from the first point to the second, x increases by 3 and y increases by 1.  Thus, the slope, m, of the line is m = rise / run = 1/3.

Use the slope-intercept equation:  y = mx + b.

If we use the data from the point (0, 4), we get:

4 = (1/3)(0) + b, so that b = 4.  The desired equation is y = (1/3)x + 4.

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The admission fee at a water park is $12.50 for children and $25.00 for adults On a certain day 352 people entered the park and
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Answer:

Children = 137

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Step-by-step explanation:

The admission fee at a water park is $12.50 for children

and $25.00 for adults.

On a certain day, 352 people entered the park and the admission fees collected totalled $6,687.50

Let the number of children admitted be x ,

and the number of adults admitted be y.

This forms a simultaneous equation:

x + y = 352 ... (i)

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Multiplyng (i) by 12.50 and (ii) by 1 we get;

12.5x + 12.5y = 4400 ... (i)

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Subtracting (ii) - (i) we get;

12.5y = 2687.5

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So the number of adults admitted = 215

And the number of children admitted = 352 - 215 = 137

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3 years ago
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All you have to do is subtract 154 and 82 and you get 72.

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