SOLUTION: A population of beetles are growing according to a linear growth model. The initial population (week 0) is P0=9, and the population after 7 weeks is P7=58. Find an explicit form

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Question 1183133: A population of beetles are growing according to a linear growth model. The initial population (week 0) is P0=9, and the population after 7 weeks is P7=58.
Find an explicit formula for the beetle population after n weeks.
Pn =

After how many weeks will the beetle population reach 149?
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
Two points of a line, P(0)=9 and P(7)=58. Only the counting numbers for n are allowed.

P%28n%29=%28%2858-9%29%2F%287-0%29%29n%2B9

P%28n%29=7n%2B9