The rules of exponents tell you to add exponents in the numerator and subtract those in the denominator. A power of a power causes the exponent to be multiplied.
Answer: The number is 480.
Step-by-step explanation:
The question states that in a 3 digit number, the hundreds digit is 4 more than the units digit and the tens digit is twice the hundreds digit.
Rounded to the nearest tenth would remain is 8.2 units is the answer. Just took the test.