A city worker descends 3 meters under ground level to fix a pipe. She then descends 4 more meters under ground to fix a second pipe. What is her position in relation to ground level? Which statements are true about this problem?

There is more than one correct answer. Select all that apply.

One of the addends is −3.
One of the addends is 4.
The worker is −7 meters from ground level.
At the end of the problem, the worker is above ground level.
Solve the problem 4+3 to find the relationship to ground level.

What are the vertical asymptotes of the function f(x) =5x+5/x2 + x-2

Aphrase is shown read the phrase and give me the answer

Submarines control how much they float or sink in the ocean by changing the volume of air and water contained in large ballast tanks. when the tanks are completely full of water, the submarine increases its overall mass and sinks down to the bottom. when the tanks are completely full of air, the submarine reduces its overall mass and floats to the surface. depending on the density of the seawater surrounding the submarine, it will pump seawater in or out of the tanks in order to achieve the same overall density as the sea water and float neutrally in the water. the volume of the submarine never changes. when the tanks are completely full of water, a submarine with a volume of 7.8\times10^3\text{ m}^37.8×10 3 m 3 7, point, 8, times, 10, start superscript, 3, end superscript, space, m, start superscript, 3, end superscript has a total mass of 8\times10^6\text{ kg}8×10 6 kg8, times, 10, start superscript, 6, end superscript, space, k, g. the density of the seawater is 10^3\text{ kg/m}^310 3 kg/m 3 10, start superscript, 3, end superscript, space, k, g, slash, m, start superscript, 3, end superscript. to make that submarine float neutrally, and neither float nor sink in the ocean, what volume of water does that submarine need to subtract from its tanks?