1. You want to buy a new gaming system that costs $500. This week Best Buy has it on sale for 15% off. Find the discount amount AND the sale price. YOU MUST SHOW YOUR WORK!

(15 x 15) / 100 = 75.

500-75=425

Step-by-step explanation:

$425 new price $75 discount amount

Step-by-step explanation:

500x.15= 75(discount)

75-500=425(new price)

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.

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.