Answer:
r = 21
Step-by-step explanation:
nth of sequence P :

: 
What proportion of the pie did my mom eat if 1/2 is left? - That's a question you could use. Hope I helped!!!!!
Answer:
its 2
Step-by-step explanation:
the opposite of the negative number would be a positive number and vise versa so the opposite of -2 would be 2