To how many decimal places are you supposed to 'estimate' the answer to?

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 park swears to camouflage bracelets how many bracelets does he have on

What does x = in this equation x+3+2x=x+5

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function