If you multiply four times the sum of my number and 2,
you get 28. What's my number?

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

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. what distance from city a is the point where the truck and the car will meet?