Answer:
A
Step-by-step explanation:


Remember that
x^(b-c)
Using that
=3^(1/2x-1/2)=3^((x-1)/2)

So we can say:
, because the bases are the same
We can multiply both sides of the equation by 2. We get x-1=2, and x=3. Which is A.
Answer: 
Step-by-step explanation:
See attached image, it's direct formula substitution.
Answer: 7.8
Step-by-step explanation:
Answer:
<em>y= -3</em>
<em>x= 0</em>
Step-by-step explanation:
I will give the explanation in picture, hope you can understand it.
Answer:
Step-by-step explanation:
he has 1/4 remaining as he has only used 3/4