An airplane descends 2.5 miles to an elevation of 7.55 miles. Find the elevation of the plane before its descent. The initial elevation of the plane was

Solve for x, y, and z. show all steps.

Answer this question, only if you know the answer. 30 points and brainliest!

Isuck at math ; ^; m a student solved this problem and said the answer is 3 feet. chase had a roll of ribbon that contained 7 7/8  feet of ribbon. he cut off one piece that was 3 5/8  feet long and another piece that was 1 1/4  feet from the roll. how much ribbon was left on the roll? is the student's answer reasonable? yes, the answer is reasonable. no, the answer is not reasonable. it should be about 2 feet. no, the answer is not reasonable. it should be about 13 feet. no, the answer is not reasonable. it should be about 4 feet.