Answer:
The answer is "
"
Step-by-step explanation:
The whole question can be found in the file attached.

Subtracting the
from both sides of the equations:


30÷4=7.5
45÷7.5=6
you will need about 6 gallons of water to fill it.
<h2>
Answer:</h2>
<em>Then the -q would be </em><em>-8.</em><em> </em>
It is because there is negative sign before the variable.
<em>I hope I helped you. I will be really happy, If you mark my answer as the brainliest.Your David.</em>