Can someone pls help me with this it's due today!!(you get Brainlist and 10 ponits!)

Find the value of x for which the lines are parallel.

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a

Pranav and molly are selling pies for a school fundraiser. customers can buy blueberry pies and pumpkin pies. pranav sold 6 blueberry pies and 4 pumpkin pies for a total of $106. molly sold 6 blueberry pies and 3 pumpkin pies for a total of $90. find the cost of each of one blueberry pie and one pumpkin pie