How do you say 58.7 with words

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

Which of the following is the result of expanding the series