6. Write equations of the following scenarios in ANY form
a) A taxi charges a flat fee of $3.50 plus $0.25 per mile.
b) A movie theatre sold $8 child tickets and $12 adult
tickets. They made a total of $400.
c) A writer charges $2 per word plus a start-up fee. If he
writes 1000 words, the writer charges a total of $2350.
d) An airplane is currently at a height of 34,000 feet high.
After 3 minutes, the airplane is now at an elevation of
22,000 feet.