Answer:

Step-by-step explanation:
Here, the given expression is:

Now, by logarithm rules, we know
if 
, then x =
Comparing here, b = 10 and z = 2
⇒ y = 
or, 
Answer:
2n - 1
Step-by-step explanation:
you add the 2 <em>ns to get 2n then you add the 1 to the equation to make </em>
<em> </em><em>2n - 1</em>
Answer:
Erica did
Step-by-step explanation:
60% of 30 is 18
20% of 70 is 14
Answer:
19.55%
Step-by-step explanation:
%change = (895-720)/895 * 100
= 19.55%
Since the original is more than the later, then it is a decrease