exam Maths Puzzle Numerical Ability

Please help me solving the following

simplify

-2^-3 - 3/-3^-2 - 3^0

thank u

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exam Other Question

Simplify (2y^-3/s^2)^3 Find the area of the triangle with base b and height h.
b=y+1, h=2y

I have already used the formula a=1/2 bh and get confused because it is not a whole number but rather y+1. The book gives no example of such a problem.