Answer:
There is no question.
Step-by-step explanation:
Answer:
13
Step-by-step explanation:
→ Substitute 3 into 2x
2 × 3
→ Evaluate
f ( x ) = 6
→ Substitute x = 3 into 3x - 2
3 × 3 - 2
→ Evaluate
7
→ Find the sum of the 2 results
13
The equation which represents exponential decay is y=![6(1/3)^{x}](https://tex.z-dn.net/?f=6%281%2F3%29%5E%7Bx%7D)
Given four equations : 1)y=
, 2) y=
, 3) y=
, 4) y=
.
Equation is relationship between two or more variables expressed in equal to form. Equations of two variables look like ax+by=c. Exponential equation look like
.
Decay means when x value increases ,the y value decreases.
We haveto put 3 values for x in the equations to check.
1)y=![3^{x} -4](https://tex.z-dn.net/?f=3%5E%7Bx%7D%20-4)
put x=0,y=-3
put x=1, y=-1
put x=2, y=5
No,itdoes not represents exponential decay.
2) y=2![4^{x}](https://tex.z-dn.net/?f=4%5E%7Bx%7D)
put x=0,y=2
put x=1, y=8
put x=2, y=32
No,it does not represents exponential decay.
3) y=![3^{x}/2](https://tex.z-dn.net/?f=3%5E%7Bx%7D%2F2)
put x=0,y=0.5
put x=1, y=1.5
put x=2, y=4.5
No,it does not represents exponential decay.
4)y=6![(1/3)^{x}](https://tex.z-dn.net/?f=%281%2F3%29%5E%7Bx%7D)
put x=0,y=6
put x=1, y=2
put x=2, y=0.67
Yes ,it represents exponential decay.
Hence the equation which represents exponential decay is y=6
.
Learn more about equations at brainly.com/question/2972832
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Answer:
<u>Percent air is calculated as:</u>
- Percent air = Current amount/Total amount *100
<u>Solve for total amount of air:</u>
- Total amount = Current amount / Percent air * 100
Substitute the values in hand to get the answer