What’s the answer no links or I will report

Find the value of x for which abcd must be a parallelogram -9-6x x-30

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

How do you determine whether a relationship represented as as graph is linear or nonlinear