A store I selling all toaster ovens at 15% off. Write an equation in the form y=kx

One-third of the people from country a claim that they are from country b, and the rest admit they are from country a. one-fourth of the people from country claim that they are from country a, and the rest admit they are from country b. in a combined census of the two countries, one-half of the total claimed to be from a. what is the ratio of the populations of country a to that of country b.

What is the 12th term of b(n)=-4-2(n-1)

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300