Answer:
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- <u>1. The slope is negative</u>
- <u>2. The demand decreases when the prices increase.</u>
Explanation:
<em>Describe the slope of the demand curve?</em>
<em>The slope of the demand curve</em> is negative.
The demand curve is graphed on a coordinate plane with the price in the horizontal axis (typically the x-axis) and the demand on the vertical axis (y-axis).
Thus, the slope will be the rate of change of the demand over the change on the price.
Mathematically:
            
Since, as you move from left to right, on the x-axis, the prices increase, and the demand (on the y-axis) lowers, the change in demand is negative and the change in the prices is positive, resulting in a negative slope.
This is seen graphycally because the demand curve is decreasing (downward-sloping).
<em>How does the slope reflect the law of demand?</em>
The slope reflects perfectly <em>the law of demand</em> because the law of demand states that, since the resources are scarce, when the prices incrases the quantities demanded decrease.
 
        
             
        
        
        
Answer:c. 12.0%
Explanation:Return on Investment (ROI) is a measure used by firms in order to determine how effective an investment is in terms of gains from its proceeds when compared to the amount invested .
 Given 
Yellowday Energy margin as 3%
turnover= 4.0 and sales as $50million, 
we can calculate the ROI,Return on Investment , as the Profit margin multiplied by turnover 
ROI = Profit Margin  x Turnover
   = 3% x 4.0
     = 0.03 x  4.0
      =0.12 
0.12 x 100 
= 12.0%  
 
        
             
        
        
        
Both y and x is the correct answer
        
             
        
        
        
Answer:
the correct answer is Building materials
Explanation:
Architects must consider the availability and cost of Building materials when they plan their projects.
 good luck