First, let's use the Distributive Property to make our equation easier to solve. Remember that the Distributive Property says the following:
Using this, we can multiply the 7 out to the 
and 3. This gives us:
Now, let's solve for :
We can see that there is one solution for this equation because is equal to one definite value after solving. Thus, our answer is A, one solution.
The answer to your question:
81/10, 8.1, and 8 1/10
Answer:
true
Step-by-step explanation:
If the standard deviation is increased and the sample size and confidence level stay the same, then the margin of error will also be increased
