exam Maths Puzzle Numerical Ability

Graph the solution set of each inequality and write it in interval notation
{x|-3 ≥ x ≥ -7}

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exam Other Question

need to find the domain of and how it was obtaned
f(t)=4.5^t
g(x)=log(x+3)
g(x) = 2^x
g(t)= 1n(t-1)
i need to factor the quadratic expression completely and find the roots of this expression. i came up with (15x-13) & (9x-7) is this correct for this problem? Thank you.
135x2 - 222x + 91