Question

Wave erosion can cause a coastline to recede at a rate of a few centimeters each year. Suppose a beach recedes 2 centimeters each year. In four years, how many centimeters will the beach recede?

Answer 1

To find out how much a beach would recede in four years at a rate of 2 centimeters per year, you multiply the yearly recession rate by the number of years, resulting in a total of 8 centimeters.

Step-by-step explanation:

If a beach recedes at a rate of 2 centimeters each year, we can calculate the total recession over four years by multiplying the annual recession rate by the number of years. The calculation would be as follows:

1. Identify the annual recession rate: 2 centimeters per year.
2. Multiply the rate by the number of years: 2 cm/year × 4 years.
3. Calculate the total recession: 2 cm/year × 4 years = 8 centimeters.a

Therefore, after four years, the beach will have receded a total of 8 centimeters.

Answer 2

You have Years thats your Y and over the course of 2cm each year. 2y. x is the total beach erosion.
over four years the beach will reside: x = 2(4) so a total of 8 CM.