Given: f(x)=3x−7, g(x)=2x2−3x+1, h(x)=4x+1, k(x)=−x2+3

Find: (g−k)(x)

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

Classify this reaction: 2al+n2-> aln.

Amixture that has two or more substances that are spread out evenly is called a. compound b. heterogeneous c. substance d. homogeneous