What is the perimeter of triangle DEF?
Answer choices:
90 cm
40 cm
45 cm
9 cm

What is the multiple zero and multiplicity of f(x) = (x ? 3)(x ? 3)(x + 5)? multiple zero is 3; multiplicity is 2 multiple zero is 5; multiplicity is 1 multiple zero is ? 5; multiplicity is 1 multiple zero is ? 3; multiplicity is 2

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?