Evan buys 19 tubes of watercolor paint for $50.35. what is the cost of each tube of paint?

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

Jessica is organizing a guided tour of the rain forest. the average profit per person that the touring company makes is given by the rational expression 18x+35/x, where x is the number of people going on the tour. what does the numerator of this rational expression represents?

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25