Question

the sum of 3 times a number and twice the same number is less than 45.a. 3n + 2n < 45b. 3n + 2 > 45c. 3(n + 2) < 45d. 2(n + 3) < 45

Answer 1

Let be "n" the number mentioned in the exercise.

You need to remember that:

1. In Math word problems:

- The word "times" means multiplication.

- The word "twice" indicates that something is multiplied by 2.

- "Sum" is the result of an Addition.

2. In inequalities, "Less than" is represented with the following symbol:

$<$

Then, based on the above, you know that "3 times a number" can be expressed as:

$3n$

And "Twice the same number":

$2n$

Therefore, "The sum of 3 times a number and twice the same number is less than 45" can be represented with the following inequality:

$3n+2n<45$

The answer is: Option a.