In this equation, what is n?

n + 6 = 20

select the correct answer.

a) standard number
b) variable

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

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

32a³b² 8ab² simplify the following expression.