Question 1 8 Points Let f(x) x+ + 7x33x2+4x - 7 4x + 5 1. Use Ad-hoc calculations to prove that f(x) is O(x3) 2. Use limits to prove that f(x) is 0(x3) Use the editor to format your answer Question 2 10 Points Solve the linear congruence 8x = 320 (mod 2157) Use the editor to format your