Need help ASAP need done before 3:30

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

Simply 8x squared + 5(7x squared- x) - 2x =

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two