Question: "Graph the exponential function f(x) = 2^x on a coordinate plane. State the y-intercept, key points (0, ?) and (1, ?), and describe the overall shape of the graph."
+
What is the general equation of an ellipse centered at (h, k), with semi-major axis a, semi-minor axis b, and the foci located at (h ± c, k), where c = √(a^2 - b^2)?
+
Question: In a right triangle, if the length of the hypotenuse is 10 and the adjacent side measures 6, what is the cosine of the angle between them?