Question

a person must be at least 13 years old to set up a video - sharing account.
a) which three of these ages can a person be to set up an account?
13 14 19
b) let a be an age, in years.

• write an inequality to represent the ages a person can be to set up an account.

a
13

Explanation:

Part (a)

Step1: Understand the requirement

A person must be at least 13 years old. So we need to check which of the given ages (13, 14, 19) are greater than or equal to 13.

Step2: Check each age

• For 13: \(13\geq13\), so valid.
• For 14: \(14\geq13\), so valid.
• For 19: \(19\geq13\), so valid.

Step1: Define the variable

Let \(a\) be the age in years.

Step2: Form the inequality

Since the person must be at least 13, the age \(a\) should be greater than or equal to 13. So the inequality is \(a\geq13\).

Answer:

13, 14, 19

Part (b)