I looked it up and it says Martin Luther King
Answer:
Gregorian chant is the central tradition of Western plainchant, a form of monophonic, unaccompanied sacred song in Latin (and occasionally Greek) of the Roman Catholic Church. Gregorian chant developed mainly in western and central Europe during the 9th and 10th centuries, with later additions and redactions.
Explanation:
Although popular legend credits Pope Gregory I with inventing Gregorian chant, scholars believe that it arose from a later Carolingian synthesis of Roman chant and Gallican chant.
Answer:

Step-by-step explanation:
We have been given the polynomial p(x)=2x+5.
Zero of the polynomial is the x-intercept. Hence, in order to find the zero of the polynomial, we set p(x)=0
Therefore, we have
2x+5=0
Subtract 5 to both sides
2x=-5
Divide both sides by 2
x= 
Therefore, the zero of the polynomial p(x)=2x+5 is 