Consider the inequality 4x+8<1+(2x-5). Use the addition of subtraction property of inequality to solve for x. Express the solution in set notation and graphically on a number line.

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”?