King sporting good have tow bikes on sale. One costs $89.98 and another costs $99.99 . What is the difference in the price of these two bikes?

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”?