Which explicit function defines this geometric sequence? 3, 1, 1/3, 1/9, ...

A. f(n) = 1/3 x 2^(n-1)
B. f(n) = 3 x (1/3)^(n-1)
C. f(n) = 1/3 x 3^(n-1)
D. f(n) = 2 x (1/3)^(n-1)

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Beth divided 9 ounces of her granola recipe into 4 equal-sized amounts. she placed the amounts into individual bowls. the fraction 9/4 represents the number of ounces of granola in each bowl. which other number represents the amount of granola beth has in each bowl? (a) 1 1/4 (b) 2 1/4 (c) 1 3/4 (d) 3 3/4 i need !

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?