A helicopter was flying at 200 feet. it then flew up 30 feet then descended 54 feet, and finally leveled of 21 feet higher. What altitude is the helicopter now?

Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?

Aladder that is 20 ft. long against the side of a building. f the angle formed between the ladder and the ground is 75 degrees, how far is the bottom of the ladder from the base of the building?

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is