A cell phone company bills on a monthly basis each bill includes a $45 service fee plus $3.20 in taxes and zero dollars for $.10 for each minute over the given 500 minutes per month Write an expression to describe the cost of the cell phone service per month where X represents a number of minutes over 500
If a company raises the service fee how will expression change?
PLEASE HELP ILL MARK YOU AS A brainliest!

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.

triangle and cube

step-by-step explanation: