exam Maths Puzzle Numerical Ability

Write interval notation for the set {xl -2 < x < 2}
I do not unerstand how to do o this either the l next to the first x is supposed to be just a line also. Can someone help plea

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exam Other Question

I am having a hard time understanding the following equation;
(-2)(4)+5-6-[-2]
________________= ?
(-2)[9+(-5)]

What are the [] brackets used for in the equation? This is one equation.

thanks........ This is a word problem that i am not so good with can someone please help! The cost of a new car is $18,000 this year. If the annual rate of in inflation is 5%, what would a new car be expected to cost in 5 years?