Instructions: Use a graphing calculator to approximate the zeros and vertex of the following quadratic functions. Round to 1 decimal place (e. g. 0.1, if necessary. Type the solutions in order from least to greatest (left to right). Function: y=x^2+5x−7
Vertex:
Solutions:

Function: y=−x^2+3x+8
Vertex: (_,_)
Solutions: (_,_) and (_,_)

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.