The functions f(x) and g(x) are described using the following equation and table:

f(x) = −4(1.09)x

x g(x)
−4 −10
−2 −7
0 −4
2 1

which equation best compares the y-intercepts of f(x) and g(x)?
the y-intercept of f(x) is equal to the y-intercept of g(x).
the y-intercept of f(x) is equal to 2 times the y-intercept of g(x).
the y-intercept of g(x) is equal to 2 times the y-intercept of f(x).
the y-intercept of g(x) is equal to 2 plus the y-intercept of f(x).

When benny’s sister penny is 24, benny’s age will be 125% of her age. how old is lenny? a) how old will benny be then? b)if benny is 12 years old now, how old is penny now? explain your reasoning.

With number 11 ( show how you got 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?