Express $15 for 10 gallons as unit rate?

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c?

Can (2,3 and square root 10) be sides ona right triangle?

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