Solve the polynomial inequality using the test-point method. 2x²-x≤0 What is the solution set? ... O A. (∞, 2]U[2,∞) OC. (∞ √2] [√2,00) , - E. (∞,√√2]U{0}U[√2,∞) - O G. (∞,√2) U (√2,∞) B. (∞,2]U{0}U[2,∞) D. (∞,-2)U{0}U(2,∞) OF. (∞,√2) U{0}U (√2,∞) OH. (∞,-2)U(2,00)

Use Descartes’ Rule to determine the possible number of positive and negative solutions. Then graph to confirm whichof those possibilities is the actual combination. 51. f(x)=2x3+37x2+200x+300

Dogs Human Age From the data printed in the following table from the Minneapolis Star Tribune on September 20, 1998, a dogs age when compared to a humans age can be modeled using either a linear formula or a quadratic formula as follows: y1=4.13x+14.63 y2=-0.033x2+4.647x+13.347, where y1 and y2 represent a dogs human age for each formula and x represents the dogs actual age. Source: Mathematics Teacher. Dog Age Human Age 1 16 2 24 3 28 5 36 7 44 9 52 11 60 13 68 15 76 a. Find y1 and y2 when x=5. b. Find dy1/dx and dy2/dx when x=5 and interpret your answers. c. If the first two points are eliminated from the table, find the equation of a line that perfectly fits the reduced set of data. Interpret your findings. d. Of the three formulas, which do you prefer?