The sum of a number times 10 and 17 is at most 21

Question

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Answer 1

Let's represent the number as x. The given statement can be written as an inequality:

x * 10 + 17 ≤ 21

Simplifying the inequality:

10x + 17 ≤ 21

Subtracting 17 from both sides:

10x ≤ 21 - 17

10x ≤ 4

Dividing both sides by 10:

x ≤ 4/10

x ≤ 0.4

Therefore, the number must be at most 0.4.