Answer: let the hours they both have equal amount of water be X
130+10x=280-5x
10x+5x=280-130
15x=150
x=10hrs
Step-by-step explanation:
Do you know how to find the area and perimeter
Distribute the 2 into the 2x and -y
Then add “like terms” which are 3x and 4x... 3y and -2y
Which then becomes 7x+y
There are no more “like terms” so that is your final answer
Answer:
The graph in the attached figure
Step-by-step explanation:
we have

----> equation A
This is the equation of a vertical parabola open downward
The vertex is the point (0,7)

----> equation B
This is the equation of a circle with center at (0,0) and radius equal to 7 units
The y-intercepts of the circle are the points (0,7) and (0,-7)
therefore
The graph in the attached figure
C no it is not a function. Each numerical grade corresponds to one letter grade