Which expression gives the surface area of a sphere with radius r? A 4ttr ^2
B 4ttr^3
C 4/3ttr^2
D 4/3ttr^3

An arrow is shot vertically upward at a rate of 180ft/s. use the projectile formula h=−16t2+v0t to determine at what time(s), in seconds, the arrow is at a height of 420ft. round your answer(s) to the nearest tenth of a second.

Pj is decorating pupcakes for rocky's birthday party. her color scheme is black, purple, and green. she will use this spinner to determine the color of sprinkles on each pupcake. which model shows the probability of randomly landing on each color?

Factor this polynomial completely x^2-64