Just add all 3 numbers up together:
6.45+ 0.15+0.5
=7.1
Since it was three days multiply the 7.1 by three
=7.1x3
=24
So for three days derrick rode for 24 km
Hoped I helped :)
The correct answer is 4x to the third power.
not too sure but I think your answer would be -5
i was going to answer but siomeome beat me lol but hdjwStep-by-step explanation: