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Nataliya [291]
3 years ago
6

You and your friend leave your houses at the same time to meet at a restaurant. The distance (in miles) your friend is from the

restaurant is given by y=-70x+140,where x is the number of hours since your friend left home. You live 80 miles from the restaurant and arrive at the same time as your friend. Write a linear equation that represents your distance from the restaurant.
Mathematics
1 answer:
Katen [24]3 years ago
6 0

Answer:

y = 80 -40x

Step-by-step explanation:

The given equation shows the friend arrives at the restaurant (y=0) when x=2. That is, half the initial distance to the restaurant is covered in each hour of travel time.

If I take 2 hours to travel the 80 miles from my house, my distance will decrease at the rate of 40 miles per hour. My distance from the restaurant can be represented by ...

... y = -40x +80

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Just to make sure we're using the same language, I'm going to use the function form of:

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[] Finally, there is a single x-intercept. Picture what the sine function looks like right now, it is floating in the air around y = 3. We need to stretch it vertically until it just grazes the x-axis. 

If A = 1, then our sine function bounces between 2 and 4 (+/- 1 around h = 3). But that doesn't touch 0, so no good.

If A = 2, then our sine function bounces between 1 and 5 (+/- 2 around h = 3). Again, not quite touching 0 yet.

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3 years ago
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$1,250 was deposited into an account for 2 years with a 2.5% interest rate. What is the in
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I will assume it is 2.5% interest rate over 2 years and not per year. If this isn’t the case then let me know.
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Ms Lewis is hiring a carpenter to repair her shed the cost of carpenter L is shown in the table
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Based on the information given, it can be deduced that the initial cost will be $187 and the hourly rate is $72 per hour.

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