If you are driving 70 miles per hour for 2 hours, you would have traveled 70 x 2 = <<70*2=140>>140 miles.
If you started driving 10 miles closer to the beach than you normally would, then your initial distance from home would have been 10 miles more than usual. Let's say your normal distance from home to the beach is x miles. Then, your initial distance from home would be x + 10 miles.
After driving for 2 hours, you would be 140 miles away from your starting point. Therefore, we can set up the equation:
distance from home = initial distance from home + distance traveled
We know that the distance traveled is 140 miles, and the initial distance from home is x + 10 miles. Therefore, we can write:
distance from home = x + 10 + 140
Simplifying this equation, we get:
distance from home = x + 150 miles
So, after 2 hours of driving at 70 miles per hour, you are x + 150 miles away from your home, where x is your usual distance from home to the beach.