What are the domain and range of f(x) = 4x – 8?
2 answers:
Answer:
Option A
Step-by-step explanation:
We have given that :
To find : domain and range of the function
Solution : The domain of the function is where the function is defined and the given function is defined for all real number
∴ domain: {x | x is a real number}
Now, the range of the function is the set of value that correspond with domain
the range correspond to value when y > -8
∴ range: {y | y > –8}
Therefore, Option A is correct
domain: {x | x is a real number}; range: {y | y > –8}
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Answer:
We must add 400 ml of water.
Step-by-step explanation:
We can use the following equation:
Where:
- C(i) is the initial concentration of the solution (80%)
- C(f) is the final concentration of the solution (30%)
- V(i) is the initial volume (150 ml)
- V(f) is the final volume
Now, we just need to solve the equation for V(f).
Therefore, we must add 400 ml of water.
I hope it helps you!