f is a trigonometric function of the form of a sin(bx+c) + d. Below is the graph f(x). The function intersects its midline at (3, -6.5) and has a maximum point at (4, - 2). Find a formula for f(x). Give an exact expression.​

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

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?