Answer:
Area- (4x+3)(3x-1)
Area- (12x^2 + 9x-4x-3)
Area- (12x^2 +5x-3)
Area- 12x^2 + 5x - 3
Let me know if this helps!
Answer:

Step-by-step explanation:
The information that we kow about the shape of the aquarium:
length:

width:

when the reef is submerged, the water level rises 3 feet. The volume that those 3 ft represent in the aquarium will be the volume of the reef.
Thus, we calculate the volume of water "addition" with the same length and width as the aquarium but with a deep of 3 feet (thi is because the reef caused the water to rise 3 feet), and this is the volume of the reef that was added to the aquarium:

The volume of the stone is 
Answer:
The 5th prime number is 11.
Step-by-step explanation:
The only factors of 11 are <u>11 and 1</u> (11 * 1) which makes it a prime number.
The first five prime numbers are 2, 3, 5, 7 and 11. Their only factors are itself and one.
divide 25 by 3 and 42 by three and plot those numbers