Please how do i solve this

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 happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !