Your time in a 5k race. is this a discrete or a continuous? write a reasonable domain

The graph below could be the graph of which exponential function?

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

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