Which linear function is represented by the graph? f(x) = –2x + 1
f(x) = –f(x) equals negative StartFraction one-half EndFraction x plus 1.x + 1
f(x) = f(x) equals StartFraction one-half EndFraction x plus 1.x + 1
f(x) = 2x + 1

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours

Can you me with this question? i'll reward *30 points i just need with this one question so that i could solve the others. * edit: i originally set up the question to reward 30 points, but for some reason i can only reward 15. if you don't get 30, then i'm sorry. i'm still kind of new to this site

Can someone tell me if these are correct?