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

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation:

x = 12

y = 1

for the points!