A bag contains 25 marbles. Some are red and the rest are black. There are 4 red marbles per black marble, a. How many red marbles are in the bag?

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?

Eliza wants to make $10,000 from her investments. she finds an investment account that earns 4.5% interest. she decides to deposit $2,500 into an account. how much money will be in her account after 14 years?