Answer: Set of all real numbers
The domain is the set of all real numbers because we can plug in any x value we want to get some y value. There is no worry about dividing by zero. We don't have to worry about taking the square root of a negative number. There are no restrictions for x.
Your answer would be 1.00$ because if you subtract all that is given from the problem you get 10-9, which equals 1.
To find the width, divide the area by the length.
Width = 9/10 / 2/5
When dividing fractions flip the second one over and multiply:
Width = 9/10 x 5/2 = (9 x5) / (10 x 2) = 45/20 = 2 and 1/4 miles.
F(-1)=81+3e-.7(-1)
enter into scientific/ graphing calculator
f(-1)=89.85
just plug into a calculator