Question

I don’t understand how to do this

Answer 1

Explanation:

p(x>3) = p(x= 5) - p(x= 3)

= (Area of ∆ from x= 0 to x= 5)- (Area of ∆ from x= 0 to x= 3)

=[ 1/2•(5-0)•0.4] -[1/2•(3-0)• 0.4)]

= 1/2•0.4(5-3)

p(x>3) = 0.4

Answer 2

There is only 1 solution where x is greater than 3 that is on the line and that is where the line Crosse where x is 4.