(88sin20)(t - 16t²) = 0
(8(0.3090169944)(t - 16t²) = 0
(2.472135955)(t - 16t²) = 0
2.472135955t - 39.55417528t² = 0
The trip back the boat will travel only 30 miles because the trip doubled the hrs.
10^4 is 10,000 when multiplied out so I'd go with the second option
Friend 3 is right like really right 18 and you 18 2,3,4
