Graph y = −x2 − 1. identify the vertex of the graph. tell whether it is a minimum or maximum.

What is the volume of the sphere shown below with a radius of 3?

Solve the equation -9p - 17 =10 a -3 b. 16 c. 18 d -16

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500