Christopher bought 4 pens that cost the same amount of money and a marker that cost $3. he spent a total of $11. which statement correctly describes how to find the cost of each pen arithmetically? answer choices subtract the product of 4 times $3 from $11 and divide the difference by 4. add the product of 4 times $3 to $11 and then divide the sum by 4. subtract $3 from $11 and then divide the difference by 4. add $3 and $11 and then divide the difference by 4.

50x5=$250

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.