Find the area of the triangle. HELP PLS

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)

Will give a: 122 b: 90 c: 48 d: 180

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?