Consider the density curve plotted below:

Find PX < 6.4):
Find P(X> 4.8):

Step-by-step explanation:

Part a

We want to find:

And we just need to find the area below the curve until x=6.4, since we have a triangle we can do this:

Part b

For this case we want to find this probability:

And we can use the complement rule and we got:

36/60

36/2=18

60/2=30

18/30

18/3=6

30/3=10

6/10

6/2=3

10/2=5

your final answer would be 3/5 of an

hope this !