Joni and Edgar go shopping. She buys 3 baseballs and 2 baseball bat for $90. Edgar buys 5 baseballs and 2 bats for $116. How much does a baseball bat cost? The baseball bat costs $13. The baseball bat costs $25.50.​

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).