In a coordinate plane, verticles at A(-1, 0) B(-1, 4) C(3, 4) and D(6, 0). Find the area of the figure ABCD. (i don't know how to find it so pls pls pls help and explain)

Autility company burns coal to generate electricity. the cost c(p), (in dollars) of removing p percent of the some stack pollutants is given by c(p)= 85000p/100-p a) find the cost to remove 30% of the pollutant b) find where the function is undefined

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315