The correct answer is a = 12
All you have to do is find the total amount he wrote out checks for and then subtract that from $259.68. The answer is $99.03
Answer:
Step-by-step explanation:
Given the expression
, to evaluate this, we will use one of the law of indices as shown;



Mario's error was that she did not raise the value of 4 to the power of -3. She only raised z^8 to the power of -3 when it is supposed to affect both 4 and z^8