Plz ! (don't have to do the plotting part, just the equation)

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

What percent of the circle below is shaded?

The square root of 9x plus 7 plus the square rot of 2x equall to 7