A concert has been sold out for weeks, and as the date of the concert draws closer, the price of the ticket increases. The cost of a pair of tickets was $150 yesterday and is $162 today. Assume that the cost continues to increase at this rate exponentially.
a. What is the daily rate of increase? What is the multiplier?
b. What will be the ticket cost one week from now, the day before the concert?
cWhat was the cost two weeks ago?

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.

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

the answer is 8.64

step-by-step explanation:

the cost of the pair of pants is $31.95