One side of a triangle is 4 cm shorter than the base, x. the other side is 3 cm longer than the base. what lengths of the base will allow the perimeter of the triangle to be at least 29 cm? write your answer as an inequality.

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”?