Pls look at attached picture i have tried asking many and no one can explain it to me

What does it mean by solve the exponential equation for x?

(x-5)1/2+5=2 what is a possible solution?

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?