Use the definition of continuity to determine whether f is continuous at a. f(x) = x−4x+5; a = 4

not continuous

continuous

Which expressions are equivalent to -6 + 3m

Need on this geometry question. explain how you did it.

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?