the product of a number and 7 is at least 28. write and solve the inequality.

Let's assume the number is represented by the variable "x".

According to the given information, the product of a number and 7 is at least 28. This can be represented as:

7x ≥ 28

To solve the inequality, we need to isolate the variable x. Divide both sides of the inequality by 7:

(7x) / 7 ≥ 28 / 7

x ≥ 4

Therefore, the solution to the inequality is x ≥ 4.

To write and solve the inequality for this problem, we need to translate the given information into mathematical expressions.

Let's assume "x" represents the unknown number.

According to the given information, the product of the number and 7 is at least 28. In mathematical terms, this can be written as:

7x ≥ 28

To solve the inequality, we want to isolate "x" on one side of the inequality sign. To do this, we can divide both sides of the inequality by 7 (since dividing by a positive number does not change the inequality). This gives us:

x ≥ 28 / 7

Now, we can simplify the right side of the inequality:

x ≥ 4

Therefore, the solution to the inequality is x ≥ 4. This means that any number greater than or equal to 4 would satisfy the given condition.

7a >= 28

a >= 4