A. -1
(1,2) and (2,1)
slope = 2 -1 / 1 -2
slope = 1 / -1
slope = -1
They all measure some sort of data
Answer:
64
Step-by-step explanation:
f(x) = 4^x,
When x = 3,
=> f(3) = 4^3
= 4 * 4 * 4
= 64
Answer:

Second option is correct.
Step-by-step explanation:
We have been given the expression 
We can write the term 64 as 
Thus, we have

Now, use the exponent law 

On simplifying, we get

This expression can be further simplified as

Second option is correct.