good day tutor , please help me answer these questions and give me explanations , thank you

Tutorial 20 1. Given that [f (x) dx = 4 and fg(x) dx = 3, find the 0 value of k such that (f (x ) dx + [[29(x) +kx|dx 2 = 10. (Mar 15) [2x + 3 , X50 2. Given f(x) = . Find the value of + 3 ,x > 0 * if [ k f ( x ) dx = 33 . (Mar 16) 4 o 3. If [f ( x) dx = 18 and if [f (x) dx = 6, evaluate -2 -2 I[ + ( x ) + x 2 Jax. (4 marks, Mar 17) 4. If [f ( x) dx = 5 and [f(x) dx = - 2, evaluate -1 N f ( x) o X + 3 dx + [f ( x) dx . (Jan 18) O -1