Acar race lasted 2.26 hours how many seconds did the race last? round to the nearest tenth of a second

Solve by any method (graphing, substitution or linear combination)y = x - 82x + 3y = 1a) (2, -6)b) (5, -3)c) (4, -4)d) (0, -8)i figured it out. the answer is (5, -3)

Which of the following is true for the relation f(x)=2x^2+1

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.