The cost of a regular-price ticket to a san francisco giants baseball game was $60. during the world series, the price increased by 2⁄5. what did the fans pay?

If you could answer these your a life saver

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”?

Use the squared identities to simplify sin^2x cos^2x