<u>Part</u><u> </u><u>(</u><u>a</u><u>)</u>

<u>Part</u><u> </u><u>(</u><u>b</u><u>)</u>

 
        
             
        
        
        
Step-by-step explanation:
Given 
w(x) = - 3x - 4
Now 
w(7) = - 3 * 7 - 4 
 = - 21 - 4
 = - 25 
Hope it will help :)❤
 
        
             
        
        
        
Answer and explanation:
A center chord in a circle is the diameter of that circle. Therefore a center chord of a circle is different from other chords that touch two points on the circle but not in the center of the circle. A diameter of a circle is the chord that runs the length of the center of the circle touching two points at the edge of the circle. A diameter is twice the radius of the circle. So if the diameter of the circle is 12cm then the radius of the circle is 6cm 
 
        
             
        
        
        
Answer:
If 1 gallon = 16 cups, then 4 gallons = 64 cups. (16 x 4)
So if there are 4 gallons of water, then there are 64 cups. If 1 cup of water evaporates a minute then it will take 64 minutes for all the water to be gone.  
Answer: 64 minutes
OR
Answer: An hour and 4 minutes
Step-by-step explanation: