A nutritionist collects data from 25 popular breakfast cereals. For each cereal, the number of calories per serving is plotted on the X axis against the number of milligrams of sodium on the Y axis. The value of r for the resulting scatter plot is 0.83 how would the value of the correlation coefficient r change if sodium was plotted on the x axis and calories plotted on the y axis

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

To find the extreme values of a function f(x.y) on a curve x-x(t), y y(t), treat f as a function of the single variable t and use the chain rule to find where df/dt is zero. in any other single-variable case, the extreme values of f are then found among the values at the critical points (points where df/dt is zero or fails to exist), and endpoints of the parameter domain. find the absolute maximum and minimum values of the following function on the given curves. use the parametric equations x=2cos t, y 2 sin t functions: curves: i) the semicircle x4,y20 i) the quarter circle x2+y-4, x20, y20 b, g(x,y)=xy

Which one ? is the answer and how to find this answer