The total number of items sold by each student who participated in a found-raiser is shown in the stem and leaf plot, which statement is best supported by data in the stem and leaf plot? Choices:

A: The number of students who sold between 10 and 20 items is greater than the number of students who sold more than 40 items.

B: The number of students who sold more than 30 items is grater than the number of students who sold fewer that 30 items.

C: The most common number of items sold is 30.

D: The most common number of items sold is 15.

constants mean the stopped points or the points on a graph that nothing is changing, hope this

step-by-step explanation:

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)