Answer:

Step-by-step explanation:
The salary per year is the combination of the $42000 per year (constant) plus the 2% rise per year. So the ecuation is:
Firt year 
Second year 
Generalizing:

So there are 5/8 gallons and 4/5 walls to cover, so the wall/gallon rate will just be 45 ÷ 5/8.
Answer:
Maridel wants to find out how many of her classmates plan to come to the next football game. There are 800 students in her school. She selects a sample of the population by putting the names of every student into a bag and drawing out 100 names.
Which statement(s) describe her sampling method? Check all that apply.
A) Her method will produce a biased sample.
<u>B) Her method will produce a valid sample.</u>
<u>C) Her method will produce a random sample.</u>
<u>D) Her method will produce a representative sample.</u>
E) Her method will produce an invalid sample.
Step-by-step explanation:
Answer:
The answer is 16 ÷ 2 = 8.
Step-by-step explanation:
Now, to find the expression modeled by arrangement of tiles.
So, according to the model in the question.
There are 16 tiles in the model.
So, arrangement of 16 tiles divided into 2 groups.
Where each group consist 8 tiles.
So, we can write as:

As 16 is the number of tiles and 2 is the number of groups.
Now, we can check the expression by doing the division.

Therefore, each group has 8 tiles.