Graph y = + 2 and y = 3x on the same set of coordinate axes. use the graphs to find the exact solutions to the equation + 2 = 3x. then, find the solutions using an algebraic method.

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”?