I just need help with D. i dont know how to solve it. someone please help and provide an explanation on how to do it?

I just need help with D i dont know how to solve it someone please help and provide an explanation on how to do it class=

Respuesta :

He feels thirsty when it's above 24.2 C. So, just see in your graph the amount of time that it's higher than 24.2C from 9 am to 5 pm.