Algebra

1). (2 points) If X Y = 30 and Y - X = 1 What is the value of X + Y ?




Answer: ______

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2). (2 points) Solve for X:

2 X + 3 = 13



Answer:________

3). (2 points) Calculate:

1 + 2 + 3 + ... + 50 =



Answer:________

4). (2 points) If a car travels 60 mph, how long will it take the car to travel 210 miles?


Answer:________

5). (2 points) What is the greatest common factor of 64 and 180?


Answer:________

6). (2 points) If an item usually costs $30, but after tax costs $31.50, what was the percent of tax?


Answer:________