50 POINTS !!

PLEASE HELP ILL GIVE BRAINLIEST !!

FAKE ANSWERS WILL GET REPORTED.

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|

Robin spent 25% more time on his research project than he had planned he’s been an extra h ours on the project which of the following expressions could represent the number of hours rob actually spent on the project

Which math statement does not contain a math variable ?