book Maths Puzzle Numerical Ability

for the pair of functions defined, find f+g, f-g, fg, and f/g. give the domain of each. probelm; f(x)=6-3x,g(x)=-4+1... Thanks so much!

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book Other Question

This question is from Chemistry class "Chemical Equilibrium" -I just cannot figure it out, I've been trying for the last 3 hours to solve it. I will give you the answere as copied The length and width of a rectangle are consecutive even intergers, and the length is lcm. Find (a) area and (b) perimeter of the rectangle.