Lisa packs some copies of a book in a box for shipping. the equation y = 14x + 9 represents the total weight in ounces of the books and the box if lisa packs x books. explain what the slope and y-intercept of the equation represents in this situation. a. the box weighs 14 ounces and each book weighs 9 ounces. b. lisa packed 14 books and the box weighs 9 ounces. c. lisa packed 9 books that weigh 14 ounces each. d. the box weighs 9 ounces and each book weighs 14 ounces.

D. the box weighs 9 ounces and each book weighs 14 ounces.

Step-by-step explanation:

apex

answer: t=3

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.