a pice of paper and a hammer are dropped of the top of school which is 90 feet high. they are both dropped from a still position( that is v=0 for both) we ignore air resistance, which object, the paper or hammer, hits the ground first?

At which value in the domain does f(x) =0?

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?

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?