Answer:
$5.61
Step-by-step explanation:
Since David only has $9.39 but he needs $15.00 for his purchase. So, you would subtract the $9.39 from the $15.00 to see how much more money David needs to make this purchase.
15.00 - 9.39
When you carry out this problem, it equals $5.61.
Therefore, David needs $5.61 to be able to complete his purchase
To solve this problem you must apply the proccedure shown below:
If
, you have that:

Because
and 
Therefore, as you can see, the answer is: 
To find area, you multiply the two dimensions, or base x height.
---
hope it helps
sorry if it didn't, you didn't provide much clarification
1:1,1:2,1:3,1:4 2:1,2:2,2:3,2:4,3:1,3:2,3:3,3:4,4:1,4:2,4:3,4:4 good luck and I hope that helped (:
Answer: 12 ounces
Step-by-step explanation:
Let the ounces of fruits that should be added be represented by x.
Based on the information given in the question, this can be represented by:
3/2 = 18/x
Cross multiply
3 × x = 18 × 2
3x = 36
x = 36/3
x = 12
Therefore, 12 ounces of nuts should be added.