Aposter is to have an area of 210 in2 with 1 inch margins at the bottom and sides and a 2 inch margin at the top. find the exact dimensions that will give the largest printed area.

Let

x-------> the length side of the poster

y-------> the width side of the poster

we know that

Area of the poster is equal to

-------> equation

Area of the printed area is equal to

----> equation

substitute equation in equation

using a graph tool

Find the vertex of the graph

The vertex of the graph is the point that represent the value of x for the largest printed area

see the attached figure

the vertex is the point

the largest printed area is

find the value of y

therefore

the answer is

The dimensions of the poster are

lol we need to see what the question is asking about

step-by-step explanation:

hello :

by applying the distributive property :

6 × 4.3 = 6 × ( 4 + 0.3 )

            =   (6 ×   4) + (6 ×   0.3)

            = 24 + 1.8

6 × 4.3 = 25.8