If a globe rotates through 150 degrees in 5 seconds, how many rotations does it make in 30

Ican figure out 20 shares multiply by $117.98 =2359.6920 shares multiply by $124.32=2486.40then take 40 shares multiply by $128.48=5139.20after that i'm lost any be greatly appreciated.

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation

You are riding your bike and notice the square sign above. you mentally draw a straight line from point a to c. describe the angle relationship between dca and bca