Answer:
Explanation:
It may be a bit easier to represent 0.75 as a fraction, since we can use the following property of exponents:
We can represent 0.75 as:
And substituting this into the function we get:
calculating the value when x=3, we get:
using the property previously stated we get:
Raising each value to the exponent we get:
When we multiply by two, we can simplify by splitting up 64, into two factors: 2 and 32, to get:
From here it's easy to see that we can cancel out the values 2, to get:
Which is our answer!