What is the sum of the first four terms of a geometric series with 2 as its first term and a common ratio of 1/3

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.