Question

Write an inequality for the given statement: 4 times the sum of a number and 3 is at least 28.

A. 4x + 3 is greater than or equal to 28


B. 4 + 3x is greater than or equal to 28


C. 4(x + 3) is greater than or equal to 28

D. 4(3x) is greater than or equal to 28

Answer 1

C

Explanation:

If a number is four times the sum of a number and 3 is at least 28 we can rewrite it as it's equivalent numerical form:

4(x+3)≥28

Since is at least

This product 4(x+3) must include 28 but can't be inferior to this.

Answer 2

The answer to the question is letter C. 4(x + 3). The expression means that the sum of x and 3 is multiplied by 4. This expression should be equal or greater than 28. All the other choices do not satisfy the inequality.