Identify a function rule for the following ordered pairs (0, -1), (2, 3), (3, 8), (4, 15) A) y=x^2

B) y=x-1

C) y=x²-1

D) y=2x-1

C

Step-by-step explanation:

Looking at the first point we know that it can't be A

Then we can easily see that the rate of change is not level (which means it isn't linear)

this leaves option C

Another way to solve this is just by plugging in points

for example for C

(4,15)

15=4^2-1

15=15

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3