X-12=20
Isolate x by adding 12 to both sides
x-12+12=20+12
x=32
Final answer: The number is 32.
Remember that difference is a keyword for subtraction.
I don’t know man I’m sorry
Multiplying 20×1/2 is the same as dividing 20 by 2. Which means the answer is 10.
Is there an image i don’t understand what expressions you’re asking for?
For this case we have that by definition the growth of a population is a function of the form:

Where,
- <em>a: initial population
</em>
- <em>b: growth rate
</em>
- <em>x: number of years
</em>
We observe then that the function is of the exponential type.
Answer:
C) Exponential