PLEASE HELP ASAP! Will give BRAINLIEST! Please answer correctly! No guessing!
2 answers:
Answer:
D
Step-by-step explanation:
Since we are being asked to find the domain, we are only interested in the values of x, hence we can discard the options which give y-values (we can ignore option B)
If we plot the function, and observe the graph (see attached), we can clearly see that the x-values can be positive or negative.
Hence A is wrong because it doesn't take into account the negative x- values.
Similarly, C is wrong because it doesn't take into account the positive x-values.
We are left with only option D.
We can verify this by once again looking at the graph and seeing that x can be any negative value, zero or any positive value (ie x can be all real numbers). Hence D is the answer.
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EXPLANATION
Let's see the facts:
The scale is---> 14 milimeters ----> 5 meters
Width = 42 milimeters
Applying the unitary method, the actual width of the pool is:
The width of the pool is 15m