The tree house will be 8 feet off the ground. Peter will hang a rope, with knots tied for foot holds. Each knot uses an additional 2 inches of rope. Write an expression for the length of the rope needed if Peter ties n knots and wants the rope to touch the ground. How many inches of rope are needed if there are 8 knots? Explain.

Question

minustempo · Answer

So the constant amount of rope needed for 0 knots is 8 feet, or 8*12 = 96 inches

Each knot adds 2 inches, so n knots adds 2n inches

Fortish · Answer

oh okay thanks for the help :D

minustempo · Answer

So the total is 96+2n

you're welcome

Fortish · Answer

ty you were correct :D