Use the function below to find F(4). f(x)=5x(1/3)^x

When the ball has traveled a distance of

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read