Guillermo is a professional deep water free diver. His altitude (in meters relative to sea level), x seconds after diving, is modeled byg(x)=201x(x−100)What is the lowest altitude Guillermo will reach? meters relative to sea level
Q. Guillermo is a professional deep water free diver. His altitude (in meters relative to sea level), x seconds after diving, is modeled byg(x)=201x(x−100)What is the lowest altitude Guillermo will reach? meters relative to sea level
Find Minimum Value: To find the lowest altitude Guillermo will reach, we need to find the minimum value of the function g(x)=(201)x(x−100). This is a quadratic function, which is parabolic in shape and opens upwards since the coefficient of x2 is positive. The minimum value of the function occurs at the vertex of the parabola.
Calculate Vertex: The vertex of a parabola given by the function f(x)=ax2+bx+c is at the point (h,k), where h=−2ab. In the case of g(x), we can rewrite the function in the form of ax2+bx+c to find a and b.g(x)=201x(x−100)=201x2−201⋅100x=201x2−5x.Here, a=201 and b=−5.
Find x-coordinate: Now we calculate the x-coordinate of the vertex using the formula h=−2ab.h=−2∗(201)−5=1015=5∗10=50.
Find y-coordinate: The x-coordinate of the vertex is 50. To find the y-coordinate, which is the minimum altitude, we substitute x=50 into the function g(x). g(50)=(201)∗50∗(50−100)=(201)∗50∗(−50)=−125.
Final Altitude: The lowest altitude Guillermo will reach is −125 meters relative to sea level.
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