Jewel buys a toy horse for $36. The store increases their purchases price by 10%. What is the sales price of the toy horse?

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

Just tell me how to set up the equation.

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?