I have a question on math

Question

1, What is the function that defines the following sequence?

10, 12, 14, 16, 18…

a. an = 12 – 2n

b.an = 10n

c.an = 8 + 2n

d.an = 2 + 8n

2.What are equivalent statements to a + 3 = 18 and 4 ∙ b = 32?

3.

Which of the following will always represent a function?

a table of pairs of numbers

an equation in the form y = mx + b

a list of numbers

a list of ordered pairs

4.

Which of the following shows a causal relation?

You add more gas to your car and the cost increases.

You sit up straighter in class and you have more homework that day.

You wear your team colors on game day and your team wins.

You go to bed late at night and then have a snow day at school the next day

5.

Answer 1

As for #1; all you're doing is listing even numbers over 8. Stick with (c).

#2. a=15; b=8.

#4, They all sound casual.

Answer 2

I will answer only part 3 for you.

y=mx+b is the only answer which will ALWAYS be a function.