Plz do number fifteen !
and also if you answer this plz answer it correctly not like "im answer ing this for the fun of it just to get points"

Given that abcd is a rhombus, what is the value of x?

Billie holiday sells children's clothing for sara vaughn's toddler shop. baby blankets sell for $29.99 after a markup rate based on cost of 109%. find the cost and the markup.

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?