Xis a normally distributed random variable with a mean of 5 and a standard deviation of 2. the probability that x is greater than 10.52 is

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

When you answer this can you explain

Find the domain of the following expression: 1/(√x)-2