Aposter is 8 1/2 inches by 11 inches. you enlarge the poster by increasing each dimension by a factor of 2 1/2. what is the area of the new poster?

we know that

The scale factor is equal to

Step 1

Convert mixed number to an improper fractions

Step 2

Increasing each dimension by the scale factor

Step 3

Find the area of the new poster

we know that

the area of the poster is equal to find the area of a rectangle

convert to mixed number

therefore

the answer is

The area of the new poster is

Alternative Method

Let

A1--------> area of the original poster

A2------> area of the new poster

sf-------> scale factor

we know that

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

read more on -

step-by-step explanation: