In some places in the world, a boy might only get 1/4 a penny for each shoe he shines. how many pennies will the boy get after shining 128 shoes?

What function has a range {yly< 5}? question on picture above^

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|

Marcy is conducting a study regarding the amount of time students at her school spend talking to friends online. which group would give marcy the best results for her study?