Assessment Practice 7. Does the graph at the right show a proportional relationship
between x and y? Explain.
8
4
X
0
0
4
8
68
8. The graph at the right shows the relationship between the
weight of silver and the total cost. Which of the following
statements about the graph are true?
The point (0,0) means that 0 pounds of silver cost $0.00
The point (1, 17) shows the constant of proportionality.
The point (4, 68) means that $4.00 is the cost for 68 pounds
of silver.
The point (2, 34) means that 34 pounds of silver
cost $2.00 per pound
The graph shows a proportional relationship.
Total Cost (5)
34
0
2 4
Weight (pounds)
30 2-5 Graph Proportional Relationships

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample

Simplify. 3(4+4x) (type your answer in with no spaces)

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?