Am purchased a television that was originally $300. He had a coupon for 35% off all electronics. How much did the television cost if he paid 6% tax on the sale price?

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”?