The sum of -9 and a number

In mathematics, summation is the addition of a sequence of any kind of numbers, called addends or summands; the result is their sum or total.

(x + 6) + (x-11) = 2x - 5

Step-by-step explanation:

answer: a) (0,0), (1,1), (2,8), and (3,27).

step-by-step explanation:

0^3=0

1^3=1

2^3=8

3^3=27

in effect, the exponential equation for this would me y=3^x. each x-coordinate cubed is giving the y coordinate, so a is your answer : )