What is the common ratio of the geometric sequence 3, -6, 12, -24, ?

Which of the following is true for the relation f(x)=2x^2+1

There are 10 chicks on ginger's farm .she has 2 chicks in one outdoor pen and 5 chicks in another. the rest of the chicks are in the barn. what is the fraction of total chicks in outdoor pens?

The curved part of the figure is the semicircle what is the best approximation for the area of this figure