The answer is Technical 
I hope that helped
        
             
        
        
        
<span>By midpoint formula,
the percentage change in the price of a tie
= {( $55 - $45) / [($45 + $55)/2]} * 100
= (10/50) * 100
= 20 percent</span>
        
             
        
        
        
Answer:
the required time is 36 seconds 
Explanation:
The computation of the required time is given below:
= Production time available ÷ desired output
= (8 hours × 60 minutes × 60 seconds) ÷ 800 units
= 28,800 ÷ 800
= 36 seconds
hence, the required time is 36 seconds 
 
        
             
        
        
        
Answer:
Expected rate of return on stock is 14.86%
Explanation:
The expected rate of return of a stock is the mean return that is expected to be earned by the stock considering the different scenarios that can occur, the return in these scenarios and the probability of the occurrence of these scenarios. The formula for expected rate of return of stock is,
rE = pA * rA  +  pB * rB  +  ...  + pN * rN
Where,
- pA, pB, ... represents the probability that scenario A, B and so on will occur or the probability of each scenario
- rA, rB, ... represents the return in scenario A, B and so on
rE = 0.21 * 0.2  +  0.72 * 0.15  +  0.07 * -0.02
rE = 0.1486 or 14.86%
 
        
             
        
        
        
The equation for problem above is:
350.25+12/100*x=800.5
12/100*x=800.5-350.25
12/100*x=450.25
12x=45025
x=45025/12=3752.08
But the question is "at <span>least" $800.50 so the final answer is
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