Josue deposited $1,700 into a savings account for 4 years. If he earned $748 in interest, what was the rate of the account? (You may use the
formula 1 = prt to solve.)

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”?