Peters average speed is the fastest on which interval?

I think it's C, because his speed is decreasing everywhere else
another way to put it, the slope is negative everywhere else but zero at C

I’m pretty sure the * means multiplication. so, if you multiply 5*1, it would equal 5. they are basically are-writing 5x1 as 5*1. so they would be… 5 10152025303540455055