The cost c (in dollars) of making n watches is represented by c=15n + 85. how many watches are made when the cost is $385?

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

Factor k2 - 17k + 16. a.(k - 2)(k - 8) b.(k - 1)(k + 16) c.(k - 1)(k - 16)

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”?