Rachel is a stunt driver and she is escaping from a building that is about to explode. The variable d models Rachel’s distance from her exit (in meters) t seconds after the cameras began. What is Rachel’s speed?

The radius of the circle is 4 cm and the measure of the central angle is 90° the area of the sector with a central angle measuring 90° and radius of length 4 cm is vt cm the triangle in the sector is 4 cm the area of the triangle is v/cm² the area of the segment of the circle is (471 - ) cm?

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?