Rosa throws a ball. The equation d = −t2 + 4t + 5 represents the path taken by Rosa's ball where d is the height of the ball (in feet) after t seconds. For this throw, how many times was Rosa's ball 8 feet 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.