Chapter ISG, Problem 5.1.2.8P

To determine

To define a variable, write and solve an inequality

Answer to Problem 5.1.2.8P

Variable is $x$

Inequality can be expressed as $x-17\ge 3$

Value of the inequality is $x\ge 20$

Explanation of Solution

Given information:

Seventeen less than a number is at least three

Calculation:

Let the number be $x$

Seventeen less than a number is $x-17$

It is given that Seventeen less than a number is at least three

So the Inequality becomes

  $x-17\ge 3$

On adding 17 on both sides

  $x-17+17\ge 3+17$

Solving it further

  $x\ge 20$