Simplify the expression.

What is the distance, in kilometers, between the two planes?
Solve for x.
Bobby and Timmy scored a total of 44 points in their last basketball game. Bobby scored 10 more points than Timmy.
Is it possible that Timmy scored 15 points?
Solve the inequality.
The local gym charges a $30 registration fee, and then charges $10 per month after that. I have $100 to spend on my membership. Write an equation to determine the number of months I can be a member.
The sum of three bank accounts range from $50 to $60. Two of the bank accounts have $24 and $20 in them. If the third bank account has x dollars in it, write and solve a compound inequality that shows the possible amount of money in the third account.
Solve for x.