Answer:
x = 8/3
Step-by-step explanation:
8^x = 256
Replace 8 with 2^3 and 256 with 2^8
2^3 ^x = 2^8
We know that a^b^c = a^(b*c)
2 ^ (3x) = 2^8
The bases are the same so the exponents are the same
3x= 8
Divide each side by 3
3x/3 = 8/3
x = 8/3
The answer is on your book
You can always make up numbers and try to draw it.
Let's say a = 1 for sake of simplicity.
If y=0 then x=0
<span>If y=1 then x=1
</span><span>If y=-1 then x=1
</span><span>If y=2 then x=4
</span><span>If y=-2 then x=4
</span>
As you can see, parabola opens to the right. Try drawing it to make sure you believe that.
Keep in mind, parabola only opens to the right if you are using the conventional x-y plane, where x-axis is horizontal and y-axis is vertical.
Answer:
C) 
Step-by-step explanation:
Recall the Pythagorean Trigonometric Identity where 
, so 
