Which of these equations represent functions? check all that apply.

a.

y = x2

b.

y = 3x

c.

x2 - y2 = 1

d.

y2 = x2

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

What sums are equal to 6/12? choose all answers that are correct a.6/12+6/12+6/12+6/12+6/12+6/12 b.2/12+1/12+1/12+2/12 c.5/12+1/12 d.1/12+1/12+1/12+3/12 plz : )

James wants to promote his band on the internet. site a offers website hosting for $4.95 per month with a $49.95 startup fee. site b offers website hosting for $9.95 per month with no startup fee. for how many months would james need to keep the website for site a to be a better choice than site b?