9514 1404 393
Answer:
   $81
Step-by-step explanation:
The garden is 4 yards = 12 feet by 3 yards = 9 feet. The area of it is the product of these dimensions, ...
   (12 ft)(9 ft) = 108 ft²
The cost of fertilizer for that area will be ...
   ($0.75/ft²)(108 ft²) = $81.00
They will spend $81.00 to fertilize the garden.
 
        
             
        
        
        
Answer:
x = 48/7
Step-by-step explanation:
There's two good ways to do this problem.
Option 1:
Translate "x varies directly as y" into the equation y=kx
Then you have to find k. After you "reset" your y=kx equation, fill in k and then solve for x. See image.
Option 2:
Translate "varies directly" into a proportion, which is two fractions equal to each other:
x/y = x/y
Fill in the three numbers given and cross multiply and solve to find the fourth number. See image.
 
        
             
        
        
        
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