Y it's directly proportional to root X when x=49 and y=4
Find a formula for y in terms of x

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

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?