For what values of x is the area of the rectangle greater than the perimeter?

the shortest sides are both 7, while the longer sides are x+2

Identify the parent function that can be used to graph the function f(x)= (1/4x)^3

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

If y varies directly as x2 and y=6 when x=6, find the constant of variation.