9
The table below shows information about age and income for employees in a
manufacturing business.
manufacturing business.
$30,000 or Less More Than $30,000 Total
25 or Younger 19 8 T 27
Older Than 2534 3 165
Total
53
3 9
92
.
a. How many employees make $30,000 or less?
b. How many employees are older than 25 or make more than $30,000?
are older than 25 and make more than $30,000?
d. Which of Parts a, b, or c uses the Addition Principle of Counting?

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.