Write -4i + (1/4-/4+8i)+17i as a complex number in standard form

Parks is wearing several rubber bracelets one third of the bracelets are tie-dye 1/6 are blue and 1/3 of the remainder are camouflage if parks wears 2 camouflage bracelets how many bracelets does he have on

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Explain why the factor 1.5 is broke. into two numbers in the model.