3) Select ALL the expressions that are equivalent to 6x + 1 - 4(2x-1). A) 6X + 1 - 8X - 4

B) 6X + 1 - 8X + 4

C) -2X + 5

D) 6X + 1 + -8X + 4

The function is f(x) = x + 2 when x > 4 and

                                  x       when x = 4

Step-by-step explanation:

Given - There were 4 people at the starting meeting. If those 4 people told

             2 people about the march, and those 2 people told another 2,

To find - How would we write this function?

Proof -

As given, initially , Total number of people = 4

After that, those 4 people told 2 people about the march

This means,

Total people know about the march = 4 + 2 = 6

Now,

Those 2 people told another 2

This means,

Total people know about the march = 6 + 2 = 8

∴ we get

The function is f(x) = x + 2 when x > 4 and

                                 x       when x = 4