Answer:
(x) = 6 - 4x
Step-by-step explanation:
let y = f(x) and rearrange making x the subject
y = - 
x + 
( multiply through by 4 to clear the fractions )
4y = - x + 6 ( subtract 6 from both sides )
4y - 6 = - x ( multiply through by - 1 )
- 4y + 6 = x
Change y back into terms of x with x = (x) , then
(x) = 6 - 4x
<h3>Stan drinks 12 ounces of water in 1 hour</h3>
<em><u>Solution:</u></em>
Given that,
Stan drinks 3/4 of a 8 ounce glass of water in 1/2 of an hour
Which means,
Therefore,
6 ounces is drank in 0.5 hour
We have to find the water he drinks in an hour
Let "x" be the water he drinks in 1 hour
Thus we get,
6 ounce = 0.5 hour
x ounces = 1 hour
This forms a proportion and we can solve the sum by cross multiplying
Thus, he drinks 12 ounces of water in 1 hour
The percentage discount on the item will be equal to 8%.
<h3>What is the percentage?</h3>
The Percentage is defined as representing any number with respect to the 100. It is denoted by the sign %.
Given that:-
- Price of the item before tax and discount = $17
- After discount and before tax price is = $15.64
The percentage of the discount will be calculated as:-
Percentage discount = ( 17 - 16.64 ) / ( 17 )
Percentage discount= ( 1.36 ) / ( 17 )
Percentage discount = 0.08 x 100 = 8%
Therefore the percentage discount on the item will be equal to 8%.
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