Can someone please help me with this

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

(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.