Square roots are rational numbers.

always, sometimes, or never

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days