Performance taskalberto's fish tankalberto gets a fish-tank kit for his birthday. the kit comeswiha 15-gallon tank, bags of colored gravel, and water-cleaningdrops. use this information to answer questions 1-4. show yourwork. write all answers in simplest form.1. the chart below shows how much of each color of gravelalberto puts in the bottom of his fish tank. colorblackgravel(pounds)a. how many pounds of gravel does alberto put in the tank?

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.

you would need to also lose 1 point for each of the other outcomes for it to be fair.

step-by-step explanation: