exam Maths Puzzle Numerical Ability

Hi. May I have some help with this inequality?

Solve the linear inequality. Express the solution using interval notation.

-1 < 2x - 2 ≤ 5

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exam Other Question

I invested $18,000. Part of it was invested at 3% annual simple interst and the rest was invested at 4%. I earned $650 in interest for the year. How much did I invest at each rate? determine the leading coefficient and the degree of the polynomial:

7xy-5+x^2y-6x^3y^2