Answer: 
Step-by-step explanation:
1. To solve this problem substitute the values of 
and 
into the function 
and prove for the value 
.
2. When , 
and 
; this means that the graph of the function should cut in the axis 
, if this does not happen, the values of and are not the right ones.
3. Then, we conclude that the correct option is the Option A:
4. You can see that the function cut the y-axis at -3.
Lets say x is quantity
65%x+25%(600-x)=45%of 600
.65x+.25(600-x)=.45*600
.65x+150-0.25x=270
0.4x=120
x=300ml
Answer:
Each person received 3 doughnuts.
Explanation:
4 boxes: doughnuts=○
| ○○○○○○ | | ○○○○○○ |
1 box 2 boxes
| ○○○○○○ | | ○○○○○○ |
3 boxes 4 boxes
There would be 24 doughnuts in each box.
24÷8=3
Therefore each person should get 3 doughnuts.
If you would like to solve for x: 3x - 24 = 81, you can do this using the following steps:
<span>3x - 24 = 81
</span>3x = 81 + 24
3x = 105
x = 105 / 3
x = 35
The correct result would be 35.
