Jenny is riding in a bike race that goes through a valley and a nearby mountain range.The table gives the altitude (in feet above sea level) for the five checkpoints in the race.Use the table to answer the questions.Checkpoint Altitude(feet above sea level)1 −1742 2,8553 1,2824 −535 −92(a) How much higher is Checkpoint 4 than Checkpoint 5?fthigher(b) The top of a hill rises 343 feet above Checkpoint 1.What is the altitude of the top of the hill?ft

a) To find out how much higher Checkpoint 4 is than Checkpoint 5, we need to subtract the altitude of Checkpoint 5 from the altitude of Checkpoint 4. Altitude at Checkpoint 4 = -53 feet Altitude at Checkpoint 5 = -92 feet (b) The top of the hill rises 343 feet above Checkpoint 1. To find the altitude of the top of the hill, we need to add the altitude of Checkpoint 1 to 343 feet.

An adventurer is exploring a new area. She tells her friend that she is 43 feet from sea level. Which could be her current elevation? Select all that apply. −143 −43 −43% 43 143 86 |−43|

Sheila is climbing on a ladder that is attached against the side of a jungle gym wall. She is 4 feet off the ground and is 3 feet from the base of the ladder, which is 15 feet from the wall. How high up the wall is the top of the ladder?The ladder is attached to the wall of the jungle gym at a height of feet.

1. Jason jumped off a cliff into the ocean in Acapulco while vacationing with some friends. His height as a function of time could be modeled by the function h(t) = -16t² + 16t + 480, where t is the time in seconds and h is the height in feet.a. How long did it take for Jason to reach his maximum height?b. What was the highest point that Jason reached?c. Jason hit the water after how many seconds?

Dan ended a hike at an elevation of 951 metres above sea level. He had started at an elevation of 178 metres above sea level. What was Dan's change in elevation?Write your answer as an integer (for example, -3).