Question 4 (9 points) Consider a continuous function f which is defined for all real numbers x and has the following properties:
• ∫₁³ f(x) dx = 5/2.
• ∫₁⁵ f(x) dx = 10.
(a) (3 points) Find the average value of f on the interval [1, 3].
(b) (3 points) Find the value of ∫₃⁵ (2f(x) - 3) dx.
(c) (3 points) Now suppose f is linear, i.e. f(x) = ax + b. Find the constants a and b.