What is the length of bc?

20
22
51.5
18

Which equation represents the partial sum of the geometric series?

Select the correct answer. joshua likes to read. he read 6 books when he was 6 years old. every year he doubled the number of books he read the previous year. how many total books did he read between the ages of 6 and 10? a. 60 b. 90 c.186 d.187

Solve x+3y=6 and 4x-6y=6 by elimination . show work !