Question

there are 55 blades of grass in 1 in.2 of the lawn. there are 230 blades of grass in 4 in.2 of the same lawn. how many blades of grass are in 3 in.2 of lawn

Answer 1

Online, "^" is used to indicate an exponent, e.g., in^2 = inches squared.

If there were 55 blades/square inch, then there would be 4 times that in 4 in^2 or 220. (your typo?)

In 3 in^2, there would be 3 * 55 = 165.

Answer 2

Not a typo. The book says 230 blades in 4 square inches.

This is what I came up with (may not be right):

X = # blades in 1 sq in

(X*4)+10 = 230 (blades in 4 sq in)

I surmised that (X*2)+5 = # blades in 2 inches

Therefore, (X*3)+7.5 = # Blades in 3 sq inches.

Answer 3

52.983