I need help please. Thank you.

Increase of 20%

Step-by-step explanation:

change = new-old/old = 54 - 45/45 = 9/45 = 0.20

Because this is a positive number this was a percent increase.

%change = |change| * 100 = % = |0.20| * 100 = % = 20%

Therefore your answer is an increase of 20%

Hope this helps,

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1