It is irrational because it is a decimal that doesn't terminate or repeat! :)
This cash flow is a perpetuity. To find the present value of perpetuity, we use the equation of
Pv=C÷r
Pv=39,000÷0.058
Pv=672,413.79
Nuke caught the ball after it was thrown 198ft
4+x <u><</u> 8: i believe this would be the right answer