Which expressions correctly shows the substitution property?

13 + 3 ÷ 3 = 1(13 + 3 ÷ 3)
13 + 3 ÷ 3 = 13 + 1
13 + 3 ÷ 3 = 16 ÷ 3
13 + 3 ÷ 3 = 13 + 3 ÷ 3 + 0

The correct answers are:

13 + 3 ÷ 3 = 1(13 + 3 ÷ 3)

13 + 3 ÷ 3 = 13 + 1

13 + 3 ÷ 3 = 13 + 3 ÷ 3 + 0

Let's look into them one by one:

13 + 3 ÷ 3 = 1(13 + 3 ÷ 3)

As anything multiplied by one will not have changes in value, this is correct.

13 + 3 ÷ 3 = 13+(3÷3) = 13 + 1

As 3÷3 is 1,this is also correct.

13 + 3 ÷ 3 = 13 + 3 ÷ 3 + 0

As anything plus zero will not have a chnage in value, this is correct.

The incorrect option:

13 + 3 ÷ 3 ≠ 16 ÷ 3

Unless there are brackets indicating addition has to be done first, devision comes before addition hence this is not correct.

Hope it helps!

the correct answer is b. negative exponential growth.

step-by-step explanation:

you can tell it's an exponential function because it decreases rapidly then levels out and never touches the x-axis.

it is negative because the y-axis decreases as the x-axis increases.

therefore it is a negative exponential growth graph.

hope i !