Donna and laura both collect stamps. the number of stamps in donna's collection can be represented by 2x + 4. the number of stamps in laura's collection can be represented by 4x + 2

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Describe the relationship between the angles of similar triangles and the sides of similar triangles

Find the values of y: 3y^3(y^2+ 2/3y)=0