Aplayground 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 5 interactions.
if there are 4 children, there can be 14 interactions.

which recursive equation represents the pattern?

an = an - 1 + 2(n - 1)

an = an - 1 + (n - 1) 2

an = an - 1 + 2(n - 1)

an = an - 1 + (2n - 1)

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

2/3

step-by-step explanation:

“a term can be a signed number, a variable, or a constant multiplied by a + sign or j sign. in , the terms are 5x , 3y and 8. when a term is made up of a constant multiplied by a variable or variables, that constant is called a coefficient.” i hope this you.