A sector with an Area of 51 pi centimeters squared has a radius of 9 cm. What is the central angle measure of the sector in radians?

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

The graph below shows the height of a projectile t seconds after it is launched. if acceleration due to gravity is -16 ft/s2, which equation models the height of the projectile correctly?

Graph the function =gx+2x3 and give its domain and range using interval notation.