You complete 3 centimeters on your necklace in an hour. Each hour after the first,you triple the length of the necklace. Write an expression using exponents for the length of the necklace after 3 hours.Then find the length.

3×3×3 = 27

after n hours, the length is

3*3^(n-1) = 3^n

Now just plug in n=3

21 cm

you complete 3 centimeter of a necklace in a hour.each hour after the first, you triple the length of the necklace.write an expression using exponents for the length of the necklace after 3 hours.then find the length.

27

3 to the 3rd power.

3hrs 3cem.

27cem.

To write an expression using exponents for the length of the necklace after 3 hours, we start with the initial length of 3 centimeters. Since the length triples each hour after the first, we can represent this by multiplying the initial length by 3 raised to the power of the number of hours minus 1.

In this case, after 3 hours, the length of the necklace can be represented by the expression 3 * (3^2). Let's calculate the length:

3 * (3^2) = 3 * 9 = 27 centimeters

So, the length of the necklace after 3 hours is 27 centimeters.