2 years ago

How to solve 64mi/h=93.9ft/s

1 answer:

8 0

64 mi 1 h 1 min 5280 ft

------- * -------- * -----------------* --------- =

h 60 min 60 sec 1 mi

337920ft

--------------

3600sec

93.8666666666666ft/s

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<u>ANSWER</u>

Only the equation is a function

<u>EXPLANATION</u>

$f(x)=x^2+8$ is graphed above with its inverse $f^{-1}(x)=\pm \sqrt{x-8}$ .

We perform the vertical line test for both the equation and its inverse.

The equation $f(x)=x^2+8$ passed the vertical line hence it is a function.

However, $f^{-1}(x)=\pm \sqrt{x-8}$ failed the vertical line test, hence it is not a function.

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