Which algebraic sentence best describes the following verbal sentence? "Four times a number is no more than 36." O A. 4x < 36 B. 4x > 36 O C. 4x < 36 D. 4x > 36 E. 4x = 36​

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”?