Question

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.

Answer 1

C.

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

Explanation:

Answer 2

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

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).

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