x=3, you can find this by using finding common bases for equation b because 243=3^5. Because of that you can get rid of three on both sides to get the equation 2x-1=5 and then just solve for x to get x=3. For the first equation 5^3=625 so that also proves x=3.
Sorry if my explanation is a little disorganized if you need more help feel free to ask
Answer:

<em>Answer</em><em> </em><em>B</em><em> </em><em>is</em><em> </em><em>correct</em><em>.</em>
Hi! I'm Carriyana!! Glad to help you today! :)
Cole needs to work 28 hrs!!
My steps:
First I did 500/20 and got 25
Then I did 700/25
And ended up with 28
So the answer should be...
<h3>~28 hrs!~</h3>
Answer:
total space of an object is area.
it is used in for calculating area of rooms as measurements.