Evaluate (if x = 4): 5 over the power of 2 - 3x - (16 divided by x)

Which addition property is being illustrated below? (type commutative or associative) (6 + 7) + 1 = 6 + (7 + 1)

The focus of parabola is (-4, -5), and its directrix is y= -1. fill in the missing terms and signs in parabolas equation in standard form

Which of the following circles have their centers in the third quadrant?