If f(x) =5x + 12 what is f-1(x)
1 answer:
To find the inverse of a function, first, let's switch f(x) with y
Now, change all the x's into y's and change all the y's into x's
Now, let's solve this equation in terms of y.
Subtract both sides by 12
Divide both sides by 5
Flip the equation so we have the y on the left
Now, replace the y with
That's your answer. If you need any clarifications, feel free to comment.
Have an awesome day! :)
Now, change all the x's into y's and change all the y's into x's
Now, let's solve this equation in terms of y.
Subtract both sides by 12
Divide both sides by 5
Flip the equation so we have the y on the left
Now, replace the y with
That's your answer. If you need any clarifications, feel free to comment.
Have an awesome day! :)
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Here, it's a percent of the original prize, so the discount is 20% of the original prize, that is 20% of 35.
20% is also 20/100 or 1/5, so we can calculate this like this:
so the discount is 7 dollars.