The sum of two rational numbers will always be 1) an irrational number

2) an integer

3) a rational number

4) a whole number

3

Step-by-step explanation:

Adding two rationals is the same as adding two fractions, which will result in another fraction of this same form since integers are closed under addition and multiplication. So, adding two rational numbers produces another rational number.

step-by-step explanation:

compare

(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