What is the equation for the line that passes through the points (-5.5, 2.5) and (-2.5, -3.5)?​

What are the domain and range of the function f(x)=2^x+1

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota