These math questions are kicking my butt. ANY HELP?

Question

I have done these questions over and over again and can't get them right. Help please!
A playground is being designed where children can interact with their friends in certain combinations.

If there is 1 child, there can be 0 interactions.
If there are 2 children, there can be only 1 interaction.
If there are 3 children, there can be 4 interactions.
If there are 4 children, there can be 9 interactions.

How many interactions will there be for 8 children?
Answer 49
64
40
36
.1 points
Question 2

A playground is being designed where children can interact with their friends in certain combinations.

If there is 1 child, there can be 0 interactions.
If there are 2 children, there can be only 1 interaction.
If there are 3 children, there can be 4 interactions.
If there are 4 children, there can be 9 interactions.

Which recursive equation represents the pattern?
Answer an = an–1 + 3n – 2
an = an–1 + 2n – 3
an = an–1 + (3n – 2)
an = an–1 + (2n – 3)
.2 points
Question 3

Shirley purchased a plot of land for $19,500. The land appreciates about 3.9% each year. What is the value of the land after five years?
Answer $19,818.94
$23,302.50
$15,982.75
$23,610.89
.3 points
Question 4

Luther purchased a motorcycle for $11,592. It depreciates about 7.2% each year. What is the value of the motorcycle after six years?
Answer $11,180.90
$7,403.66
$17,592.48
$6,584.26
.3 points
Question 5

The yearly attendance at a local movie theater is 42,000 and grows continuously at a rate of 5.9% each year. What is the approximate attendance at the movie theater in seven years?
Answer 62,737
59,346
43,467
63,476
.3 points
Question 6

The number of customers that visit a local small business is 37,800 and has been continuously declining at a rate of 1.7% each year. What is the approximate number of customers that visit the business in 12 years?
Answer 30,770
32,017
30,824
46,354

Answer 1

Best Answer - Chosen by Voters

Oh my god, just do your own homework. You probably could've finished them if you tried working them out, instead of taking all that time to type out a question.