Answer:
The correct answer is 48, given by option c.
Step-by-step explanation:
This question can be solved by proportions, using a rule of three.
Positive correlation means that the variables are directly proportional, and thus, we apply cross multiplication.
If v is 24 when u is 10, which of these is most likely to be the value of v when u is 20?
24 - 10
x - 20
Applying cross multiplication:

Simplifying both sides by 10:

The correct answer is 48, given by option c.
Answer:
22
Step-by-step explanation:
1 US Dollar equals 0.95 Euro so you can get 16 sweets.
Step-by-step explanation:
-3(-x -3y) = 3( x +3y) = 3x+9y