SOLUTION: You start measuring the growth of a tree in your backyard. It’s initial circumference was 80 cm and it grows at a rate of 2 cm every year. This situation can be represented by th

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: You start measuring the growth of a tree in your backyard. It’s initial circumference was 80 cm and it grows at a rate of 2 cm every year. This situation can be represented by th      Log On


   

Question 1169612: You start measuring the growth of a tree in your backyard. It’s initial circumference was 80 cm and it grows at a rate of 2 cm every year. This situation can be represented by the equation C = 80 + 2t
a) What do the C and t represent in this equation



b) What was the circumference of the tree after 7 years?



c) After how many years was the circumference 92 cm?



d) What was the diameter of the tree after 8 years?

Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
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C = 80 + 2t
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Your description tells very plainly what each number represents in your formula.

Do you recognize what substitutions to make for (b) and (c) ?

Do you remember a simple formula needed for question part (d)? And recognize the substitution to make?