4. Rachel has 3000 feet of fencing to enclose a rectangular field for her horses. One side of the field lies along the river, so only three sides require fence material.
a. Express the area A of the rectangle as a function of the width x of the rectangle.
b. What is the domain of A?
c. Use a graphing calculator to find the value of x that produces the largest area.
I

Find the area and perimeter of each composite figure. use 3.14 for π. round your answer to the nearest tenth. a square and a right triangle share a common side. image long description a 3-meter by 0.5-meter rectangle has triangles attached like wings to the 3-meter sides. the other two sides of both triangles measure 2.5 meters. the height of each triangle is 2 meters. a 6-inch by 4-inch rectangle has 2 half-circles attached like wings to the 6-inch sides. the radius of each half-circle is 3 inches. find the surface area and volume of each figure. use 3.14 for π. round your answer to the nearest tenth. a right circular cylinder has a base radius of 6 yards and a height of 20 yards. a rectangular prism has a base that is 9 centimeters long and 7 centimeters wide. the height is 2 centimeters. a rectangular prism has a base that measures 11 millimeters by 11 millimeters. the height is 11 millimeters.

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

25 ! i need asap! ! ill mark brainliest!