A man at the top of a watchtower knows that his eye is 86 ft. above the ground. On the level plateau supporting the tower, there is a rock known to be 500 ft. from the base of the tower. Find the measure of the angle of depression of the rock from the top of the tower.

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”?

What is the slope of the line passing through the points (-5, 7) and (-3,5)?

Simplify the expression 8h - 57-3m by adding or subtracting the like term