HELP! In rectangle DEBC, Eb = 12 and Cb =4. What is the approximate distance from point E to point C? (I’m giving away robux to who ever helps me)

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2

The perimeter of an equilateral triangle is 4 cm more than the perimeter of a square and the length of a side of the triangle is 8 cm more than the length of a side of the aware. find the length of a side of the equilateral triangle