Jim and Lillian are painting a wall that is 15 ft wide and 9 feet tall and they will need to buy $ 135x of paint to paint the whole wall, where "x" is the cost of painting per square feet of the wall.
To solve this question, we will move ahead with a very direct approach of problem solving which is, step-by-step formulation.
First, we will calculate the area of the wall to be painted by using the formula to calculate the area of a rectangle which goes as
[tex](l*b)[/tex] sq. feet where, "l" is the length or height of the rectangle and "b" is the breadth or width of it.
Then, we will just multiply the calculated area with the rate of painting per unit.
Here, as per data provided in the question statement, the wall to be painted is 15 ft wide and 9 feet tall, i.e., (l = 15) and (b = 9).
Therefore, area of the wall = [tex](15*9)=135[/tex] square feet.
And since, no rate of painting is provided, let us assume that the rate of painting per square feet is $ x, then, amount of paint to be purchased to paint the wall will be [tex](135*x)=$135x[/tex] Dollars.
- Rectangle: In Euclidean plane geometry, a rectangle is a quadrilateral with four right angles and two pairs of parallelly opposite equal sides, i.e., more specifically can be defined as a parallelogram with all four interior angles being right-angles.
To learn more about Rectangles, click on the link below.
https://brainly.com/question/19477740
#SPJ9
