Answer:
Answer is 15-r .Hope it will help you
Answer:
try b
Step-by-step explanation:
Answer:
See explanation
Step-by-step explanation:
Consider the sequence 
Rewrite it as

The points on the coordinate plane are
(see attached graph).
Since
given sequence is geometric.
Answer:
Step-by-step explanation:
Answer:
20 sets
Step-by-step explanation:
320/16=20
He needs 320 ping pong balls, and he has 16, so divide the amount needed by the amount that comes in each containter.