2 years ago

If G varies inversely as r, and G = 18 when r= 4, find G when r= 6

1 answer:

3 0

The model to use here is y = k/x.

If g =18 when r = 4, then 18 = k/4. Solving for k, k = 72.

Then g = 72/r. If r = 6, g = 72/6 = 12 (answer)

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20 POINTS AND BRAINLIEST!! Write an exponential function in the form y=ab^x

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Answer:

$y=13(4)^x$

Step-by-step explanation:

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And it goes through the points (0, 13) and (3, 832).

Hence, when we substitute in 0 for x, we should get 13 for y. Therefore:

$13=ab^0$

Since anything to the zeroth power is 1, this yields:

$a=13$

So, we determined that the value of a is 13.

So, our function is now:

$y=13b^x$

We will need to determine b. We know that y equals 832 when x is 3. Hence:

$832=13(b)^3$

Divide both sides by 13:

$b^3=64$

Take the cube root of both sides:

$b=4$

Hence, our b value is 4.

Therefore, our entire equation is:

$y=13(4)^x$

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anzhelika [568]

Answer:

Assuming they bought the same shoes, $82.5

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80% of Original Shoe price = $82

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82 / 0.8 = 102.5

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