The half-life of the radioactive element unnobtanium-47 is 20 seconds. If 176 grams of unnobtanium-47 pharmacy present how many grams are present after 20 seconds

Part a: select all of the ordered pairs that are located on the graph of the equation. part b: does the graph of the equation represent a function? select all correct answers for part a and one answer for part b.

Ill mark the brainliest if you me with the these three questions 7,8,9

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?