PLEASE HELP ASAP 40 POINTS Calculate the percent increase or decrease between the starting and ending quantities
below. Round your answer to one decimal place.

Start: 3
End: 10

Start: 9
End: 20

Start: 100
End: 85

Start: 45
End: 20

Start: 30
End: 60

Can someone check my answer? you : )

Find the measure of the interior angles of the following regular polygons: a triangle, a quadrilateral, a pentagon, an octagon, a decagon, a 30-gon, a 50-gon, and a 100-gon.

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126