Aubree invests money in an account paying simple interest. She invests $30 and no money is added or removed from the investment. After one year, she has $32.40. What is the simple percent interest per year?

If a flying disk is 139 meters in the air and travels at an average of 13 m/s how long is it in the air

(05.02) mr. morris is going to save money and replace his sailboat's mainsail himself. he must determine the area of the mainsail in order to buy the correct amount of material. calculate the area of the parallelogram to determine how much material should be purchased. be sure to explain how to decompose this shape into rectangles and triangles. describe their dimensions and show your work.

Write each improper fraction as a mixed number. 9/4. 8/3. 23/6. 11/2. 17/5. 15/8. 33/10. 29/12.