Dario started a bank account with a deposit of $90. he deposited $25 a month for 6 months. The bank pays simple interest half-yearly at a rate of 4% per annum. Calculate the amount in the bank AFTER the interest was added. with work.

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?