11) Terrel purchased some hats and jerseys at Lids. Each jersey cost $85.00 and each hat cost $20. The expression 15x + 90y gives the total amount of money spent by John in the store. What is the meaning of the variable: y? - =​

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

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

Is the square root of 4 plus the square root of 16 rational?