Free brainliest. And free points :)

The water has been on the stove y=9.5x+62.1 after how many minutes will the tempature be 138.1 f

What is the difference between regular convex and concave polygons

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)