Use a graphing calculator to sketch the graph of the quadratic equation, and then state the domain and range. y = negative 5 x squared + 3 x + 10 a. D: (x greater-than-or-equal-to 0.3) R: all real numbers c. D: (x greater-than-or-equal-to 0.3) R: (y less-than-or-equal-to 10) b. D: all real numbers R: (y greater-than-or-equal-to 10.45) d. D: all real numbers R: (y less-than-or-equal-to 10.45) Please select the best answer from the choices provided A B C D

Use a calculator to verify that σ(x) = 62, σ(x2) = 1034, σ(y) = 644, σ(y2) = 93,438, and σ(x y) = 9,622. compute r. (enter a number. round your answer to three decimal places.) as x increases from 3 to 22 months, does the value of r imply that y should tend to increase or decrease? explain your answer. given our value of r, y should tend to increase as x increases. given our value of r, we can not draw any conclusions for the behavior of y as x increases. given our value of r, y should tend to remain constant as x increases. given our value of r, y should tend to decrease as x increases.