John takes his wife to dinner and they have a bill of 34.50. what will be the total they pay a 5% tax and 20% tip

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Awater tank holds 18000 gallons. how long will it take for the water level to reach 6000 gallons if the water is used at anaverage rate of 450 gallons per day

Two friends are reading books. jimmy reads a book with 21,356 words. his friend bob reads a book with one-and-a-half times as many words. which expression represents the number of words bob reads?