Solve for X. Then find the measure of Angle A

What percent of 18 is 24? and plz explain thx.

The computer that controls a bank's automatic teller machine crashes a mean of 0.6 times per day. what is the probability that, in any seven-day week, the computer will crash less than 5 times? round your answer to four decimal places

Find the measure of angle c in the following triangle.