Louie made 8.1 liters of fruit punch using only grape juice and carbonated water. he used 4.2 liters of grape juice. the equation 4.2 + c = 8.1 can be used to represent this situation, where c is the number of liters of carbonated water used. how many liters of carbonated water did louie use?

3.9 liters
4.1 liters
12.3 liters
16.5 liters

First option is correct.

Step-by-step explanation:

Since we have given that

Quantity of fruit punch using only grape juice and carbonated water = 8.1 liters

Quantity of grape juice he used = 4.2 liters

So, the equation would be

where c is the number of liters of carbonated water used.

So, Amount of carbonated water is given by

Hence, First option is correct.

do you mean add both of the equations together

because if you do the answer is 10x-5

step-by-step explanation:

24

step-by-step explanation: