Answer:
B
Step-by-step explanation:
Side AB= Side DE
Angle B=90  Angle E=90
Side BC= Side EF
Therefore, they are congruent because of the SAS(Side Angle Side) Postulate.
 
        
             
        
        
        
To do this, we must set up ratios:
Option One:
The first options costs only 
$0.0092/gram (a fraction of a penny)!
Option Two:

The second option costs only 
$0.0085/gram (cheaper than option one)!
Option Three: This requires a little more work. First, we have to convert the grams into kilograms. For every 1 kg, there is 1,000 g. Therefore, 
1,000g costs $5.65. Next, we set up the ratio as usual:

The third option costs 
$0.00565/gram.
Therefore, 
option three is the cheapest! Hope this helps!
 
        
        
        
Answer:
Y=K×X...... equation
When,Y=8 and X=-5
To find the constant (K)
we substitute for K in the equation
8=K×-5
8=-5K divide both sides by -5
8÷-5=-5K÷-5
K=-1.6