Answer:
4 1/2 + 1 3/5 = 6 1/10 or 61/10
I believe the answer would be 4/6 which would simplify to 2/3
I think the answer is 1.15 seconds. Thats just a guess..... So yeah sorry if wrong!! BYYYYYYYYEEEE :Letter b I think IDKKK
(9x-15)/4=x /*4...... 9x-15=4x........ 5x=15........ x=3
For

to be continuous at

, we need to have

Note that

means that

, but that

is *approaching* 5. We're told that for

, we have

We can write

and the limit would be

and so

is discontinuous.