Answer:
The price of pretzels in 1975 = $1.80
Step-by-step explanation:
To answer this question we are assuming the steady rate means linear.Let x be the year and y be the price.
We need to find the slope
m = (y2-y1)/(x2-x1)
   = (4.80-4.05)/(2015-2005)
   =.75/10
  = .075
The slope is .075
We can use the point slope form of the equation  
y-y1 = m(x-x1)
y-4.80 = .075(x-2015)
Distribute
y - 4.80 = .075x -151.125
Add 4.80 to each side
y - 4.80+4.80 = .075x -151.125+4.80
y =  .075 x - 146.325
We want to find out how much pretzels were in 1975.  Put in x=1975
y = .075(1975) -146.325
y = 148.125-146.325
y=1.80
 
        
                    
             
        
        
        
The probability of tossing tail would be 9/13
        
             
        
        
        
Answer:
One real root, with multiplicity 7.
Step-by-step explanation:
The given expresion is 

This is a seventh degree polynomial.
According to the fundamental theorem of Algebra, the expression has a potential 7 roots both real and complex.
This expression has one real root, with multiplicity , 7.