explain what the following statement means. Polynomials are closed under the operations of addition and subtraction. Provide one edition example and one subtraction example to demonstrate

Amanager recorded the number of bicycles sold by his company each quarter. his projected sales after t years is given by the expression below. which of the following statements best describes the expression? a. the initial sales of 575 bicycles increases at the rate of 4% over 4 quarters. b. the initial sales of 575 bicycles increases at the rate of 18% over 4 years. c. the initial sales of 575 bicycles increases at the rate of 4% over t quarters. d. the initial sales of 575 bicycles increases at the rate of 18% over t years.

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

Hello, i need compare km^2 and km. what's difference in this?