I need the answer for question 15 a and b
2 answers:
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Answer:
Yes, the given table represent an exponential function.
Step-by-step explanation:
Given table is :
x y
1 4
2 16
3 64
4 256
Now we need to identify if the given table represent an exponential function or not. To find that we need to check if we can write the numbers in y-column in form of exponential function .
We see that y-values are basically powers of 4 so we can write the related function as .
Which is clearly in form of .
Hence yes, the given table represent an exponential function.
Answer:
1/2 rational exponent represents a square root.
Therefore, option A is correct.
Step-by-step explanation:
As we know that raising to the one-half power i.e. is the same
as taking the square root.
- so
is the same as the square root of
.
For example, taking the square root of 4 will determine:
so the expression becomes
∵
so, 1/2 rational exponent represents a square root.
Therefore, option A is correct.