Elijah started his hike at an elevation of 215 feet below sea level. Throughout the hike, he ascended 2,400 feet and then descended 576 feet. How much did his elevation change? A. 3,191 feet
B. 1,609 feet
C. 2,761 feet
D. 2,039 feet

Gregory draws a scale drawing of his room. the scale that he uses is 1 cm : 4 ft. on his drawing, the room is 3 centimeters long. which equation can be used to find the actual length of gregory's room?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?

What is the slopeof the live that passes through the points and (-2,-5) and (3,-1)