1. Given that f(x) = {(1, 3), (2, 9), (5, 7), (11, 9)} and g(x)= {(2, 8), (3, 1), (4, 5), (9, 1), (11, 0)} Determine the following. a. f(x) + g(x) b. g(x)-f(x) c. f(x) x g(x) f(x) d. g(x) e. fog(x)

3.

Jamie has just completed her second semester in college. She earned a grade of A in her 1​-hour linear algebra ​course, a grade of C in her 5​-hour psychology ​course, a grade of D in her 1​-hour biology ​course, and a grade of A in her 4​-hour creative writing course. Assuming that A equals 4​ points, B equals 3​ points, C equals 2​ points, D equals 1​ point, and F is worth no​ points, determine Jamie​'s ​grade-point average for the semester.