Please help me I’m so behind and I’m going to fail if I can’t get this answer. I need 15 but can someone also do 14.

An airport in death valley is 60 feet below sea level, and an airplane is flying 2,000 feet above sea level. how many feet must the plane descend in order to land? a. 2060 b. 2000 feet c. 1940 feet d. 1880 feet e.1400 feet will mark as brainliest

We just started the introduction into circles and i have no idea how to do this.

If t8 = 4 and t12 = −2, find the first three terms of the arithmetic sequence.