Answer:
The probability of no correct answers is 0.125 = 12.5%.
Step-by-step explanation:
For each question, there are only two possible outcomes. Either it is answered correctly, or it is not. The probability of a question being answered correctly is independent of any other question, which means that we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which
is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.
3 trials, each with probability of success (correct) given by p=0.50.
This means that 
The probability of no correct answers is
This is P(X = 0).


The probability of no correct answers is 0.125 = 12.5%.
Start with your $22.50 subtotal (cost without tax)
Then, solve for 6.5% of $22.50
Set your equation up like so: 6.5/100=x/22.50
Cross multiply then you should have 100x=146.25
Solve to get 1.4625% (If you need it rounded, it's 1.5%)
1.5% ----> $1.46
$22.50+$1.56=$23.96
She spent $23.96
Answer B because your unloved and ugly
Answer:
The solutions are:

Step-by-step explanation:
Considering the expression
Solving the expression












So,

Therefore, the solutions are:
