John just ate a piece of pie that was 350 calories. how long would he have to bike at 10 mph to work off the pie?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Acourt reporter is transcribing an accident report from germany. the report states that the driver was traveling 80 kilometers per hour. how many miles per hour was the driver traveling?

Simplify using positive exponents only.