Question

At age of 2 years, a cat or a dog is considered 24 “human” years old. Each year, after age 2 is equivalent to 4 “human” years. Fill in the expression [24 + (a – 2)] so that it represents the age of a cat or dog in human years. Also, you need to determine for what ‘a’ stands for. Copy the chart and use your expression to complete it.

Age	[24 + (a – 2)]	Age (Human Years)
2
3
4
5
6

Answer 1

The expression is [24 + 4(a – 2)]

Here, ‘a’ represents the present age of dog or cat.

Age	[24 + 4 (a – 2)]	Age (Human Years)
2	[24 + 4(2 – 2)]	24
3	[24 + 4(3 – 2)]	28
4	[24 + 4(4 – 2)]	32
5	[24 + 4(5 – 2)]	36
6	[24 + 4(6 – 2)]	40