Only 30 of Bills 40 customers take the Sunday paper. About how long does it take Bill to deliver his papers Sunday

The size of a certain cell is 2.5*10^-9m. another cell is 1.5*10^3 times larger. how large is the larger cell in scientific notation?

Which expression shows the sum of the polynomials with like terms grouped together

What is the mean of the data set 125, 141, 213, 155, 281