I would think you would use ounces to measure the weight of a cell phone
Answer: First Option | 2 x 10^1
Reason: After doing 6.4 divided by 3.2, you get 2, and finally you subtract 10³ by 10². And after that subtraction, you get 10^1, Therefore the answer is the first option.
<em>I hope this helps, and Happy Holidays! :)</em>
$78.17 rounds to $78
15% of $78 = $11.70 which rounds to $12
Its c.
If you will substitute those numbers to the pair of equations, both will be true.
1=-3+4
1=3-2
