What is 1.96 billion in scientific notation?

a. 1.96 109
b. 1.96 106
c. 1.96 1012
d. 1.96 1015

Anthony is making a collage for his art class my picking shapes randomly. he has five squares, two triangles, two ovals, and four circles. find p( circle is chosen first)

The surface area of the triangular prism is .

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years