Hello I need some help with these 2 questions. If you could please show me all your work on a separate sheet of paper with the solutions/answers that would be great!

1b) Sketch a possible distance curve for the acceleration curve at right. Justify your solution by offering a full explanation of your reasoning. 4. The effectiveness of studying for an exam depends upon how many hours a student studies. Some experiments show that if the effectiveness, E, is put on a scale of 0 to 10, then E(t) = 0.5 10 + te /20 where t is the number of hours spent studying for an examination. If a student has up to 30 hours for studying, how many hours are needed for maximum effectiveness