exam Maths Puzzle Numerical Ability

A homeowner wishes to insulate her attic with fiberglass insulation to conserve energy. The insulation comes in 40-cm wide rolls that are cut to fit between the rafters in the att

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What is the future value of a 5 year annunity due that promiese to pay you $300 each year? Assume that all payments are reinvested at 7 Percent a year, until Year 5.

Please simply answer for me, I have a hard time with math, pleae show formula.
can someone help me find the value of the polynomial
-x^2-9x-6
I have
-5^2-9(5)-6
=-25-45-6
=-76