Answer:
811 feet
Step-by-step explanation:
When finding height difference, you use absolute value, so everything is positive. 747+64 = 811, so your answer is 811 feet.
Hope this helps!
Simplify the expression

It can be simplified as below:

Answer:
120
Step-by-step explanation:
Just add the 20 back to 40 and times by 2
40 + 20 = 60
60 * 2 = 120
Answer:
81x^4/16 (81x to the fourth over 16)
Step-by-step explanation:
First you apply the exponent rule: (a/b)^c -> a^c/b^c
So it looks like this: 3x^2/4^2
Then you apply the exponent to the whole thing, and 3^4 is 81, x^4 stays like that, and 2^4 is 16
You can't simplify any more after that so that's your answer
Hope this helps!