Set up a Cartesian coordinate system with its origin at the entrance to a tunnel. The mountain rises 350 m above the level of the track and the next valley descends 150 m below the track.
The cross section of the mountain and valley is roughly sinusoidal, with a horizontal distance of
600 m from the top of the mountain to the bottom of the valley.
a. Write a particular equation expressing the vertical displacement y, in meters, from the track
to the surface of the mountain valley as a function of x, in meters, form the tunnel entrance.
b. How long will the tunnel be? How long will the bridge be?
C.
The railway company thinks it might be cheaper to build the line if it is raised by 40 m. The
tunnel will be shorter and the bridge will be longer. Find the new values of x at the
beginning and the end of the tunnel and the bridge. How long will each section be under
these conditions?
All work is shown on my paper

First to answer all gets a donation question 3(multiple choice worth 1 points) (04.01 lc) which of the following levels is lower than cells in the hierarchy of organization of living things? molecules organs organ systems tissues question 4(multiple choice worth 1 points) (04.01 lc) which of these represents an individual form of life such as an animal, plant, or single-celled life form? organ organism organ system tissue question 5(multiple choice worth 1 points) (04.03 lc) what are the green structures inside plant cells where photosynthesis takes place called? chloroplast mitochondrion nucleus vacuole question 6(multiple choice worth 1 points) (04.03 lc) which of the following best matches a part of a living cell with the function it performs? cytoplasm: fluid which carries the nucleus and other organelles vacuole: fluid which carries the nucleus and other organelles cytoplasm: directs all of the cell's activities vacuole: directs all of the cell's activities question 7(multiple choice worth 1 points) (04.03 mc) read the table below. organelles of plant cells present in both plants and animals present in plants but not animals small in animals but large in plants organelle a organelle b organelle c which statement is most likely correct? organelle a is chloroplast, organelle b is cytoplasm, and organelle c is nucleus. organelle a is mitochondrion, organelle b is cytoplasm, and organelle c is nucleus. organelle a is cell wall, organelle b is chloroplast, and organelle c is mitochondrion. organelle a is mitochondrion, organelle b is chloroplast, and organelle c is vacuole. question 8(multiple choice worth 1 points) (04.03 mc) what will most likely happen in the absence of a nucleus? genetic information will not be transmitted by the cell. energy will not be released during cellular respiration. the cell will not store food, water, nutrients, and waste. the cell will lose its shape and structure.