Dan spent half of his allowance going to the movies. he washed the family car and earned 9 dollars. what is his weekly allowance if he ended with 14 dollars?

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be bale to prepare using the sauce?

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?