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frutty [35]
3 years ago
11

The cost, Y (in dollars) to provide for guests at a dinner party is proportional to the number x of guests attending the party.

It costs 30 dollars to provide food for 4 guests.
Mathematics
1 answer:
Annette [7]3 years ago
4 0

Maybe you missed to add the complete question. After a little research I was able to find the complete question which is as follows:

<em>''The cost y(in dollars) to provide food for guests at a dinner party is proportional to the number x of guests attending the party. It costs $30 to provide food for 4 guests. a. Write an equation that represents the situation. b. Interpret the slope. c. How much does it cost to provide food for 10 guests?'' </em>

So, I am solving based on this complete question.

Answer:

Please check the explanation.

Step-by-step explanation:

<em>a. Write an equation that represents the situation. </em>

As the cost and the number of guests are proportional.

So the equation of the form

y = mx

Plug in the values y = 30 and x = 4 to find m

y = mx

30 = m (4)

m = 30/4

    = 7.5

Now, substituting m = 7.5 in the equation y=mx

y = mx

y = 7.5x

<em>b) Interpreting Slope</em>

Given that the units for y are dollars, and the units for x are guests.

Thus, the slope 7.5 means it costs $7.5 per guest.

<em>c) How much does it cost to provide food for 10 guests?'' </em>

We know the equation

y = 7.5x

put x = 10

y = 7.5(10)

y = $75

Thus, it costs 75 dollars for 10 guests.

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