Jack bought 4 dozen eggs at $10 per dozen. 6 were broken. what percent of his money goes to waste

Can someone me with these two circle theorem questions asap?

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)

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”?