The product of two numbers is 21. If the first number is - 3, which equation represents this situation and what is the second number?

A.

The equation that represents this situation is x - 3 = 21. The second number is 24.

B.

The equation that represents this situation is 3x = 21. The second number is 7

C.

The equation that represents this situation is - 3x = 21. The second number is - 7.

D.

The equation that represents this situation is - 3 + x = 21. The second number is 18.

C.

The equation that represents this situation is - 3x = 21. The second number is - 7.

Answer: The equation that represents this situation is - 3x = 21. The second number is - 7 (option C).

Step-by-step explanation:

Hi, the correct option is C.

We have to analyze the information given to write the equation and corroborate the option chosen.

So:

first number = - 3

Product means the result of multiplication, in this case, the product is number 21.

Mathematically speaking:

-3x = 21

x = 21/-3

x = - 7

In conlclusion, he equation that represents this situation is - 3x = 21. The second number is - 7 (option C).

Feel free to ask for more if it's necessary or if you did not understand something.