The area of the shaded part of the figure below can be determined in different ways. Use the drop-down menus to explain how to find the area by decomposing the figure into rectangles or trapezoids. please help I'll mark brainest! ​

Can someone check if i did this correct. it’s number 4 if you’re wondering.

Awater tank holds 18000 gallons. how long will it take for the water level to reach 6000 gallons if the water is used at anaverage rate of 450 gallons per day

Fatima plans to spend at least $15 and at most $20 dollars on sketch pads and pencils. if she buys 2 sketchpads, how many pemcils can she buy while staying in her price range? fatima can buy between and pencils. ? (type whole numbers. use ascending? order.)