At a restaurant, trevor decides to tip the server 16% of the bill. if he leaves a $4.00 tip, which proportion could be used to find how much the bill was for?

16% of x = 4  or  0.16x = 4

Step-by-step explanation:

Let the amount of the restaurant bill is $x.

Now we know Trevor leaves 16% of the bill as a tip

Therefore, amount of tip will be 16% of x

this amount is $4.

So equation for this situation will be

16% of x = 4  or  0.16x = 4

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.