Diagram of the adjacent picture frame has outer dimensions 28cmx24cm and inner dimensions 20cmx16cm. find the area of shaded part of frame, if width of each section is the same

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each, and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent. how much did jamie pay at the end?

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?