Evaluate the numerical expression 30-(9××4) how to show the work

If a(0,0,0) and b(2,2,2) are points in coordinate space, how many paths are there from a to b that move from one lattice point to another in the positive x-,y- or z- direction?

Which angle of rotation is an angle of rotational symmetry for all figures?

If i want to read a 124-page book in 3 weeks how many pages would i have to read each day?