book Maths Puzzle Numerical Ability

Work Problems PLEASE HELP ME?? EVEN IF YOU ONLY KNOW HOW TO START THIS. CAN SOMEONE GIVE ME ANY INFORMATION???
Jenny has bought a new condo. The closing has been set for 45 days

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I need help with this! Thanks so much!
apply the quadratic formula to find the roots of the given function, and then graph the function.

f(x) = x^2 - 4 how do i find the area of a trapazoid??