A marine biologist wants to know the total vertical distance a dolphin traveled during a
jump. With the surface of the water being zero, it started under water at -35 feet,
jumped up and out of the water to 27 feet, and returned to the water to swim at -18
feet. What is the total vertical distance the dolphin traveled?

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x

the graph line crosses the x axis at both -6 and -2, so the answer would be the second one.

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