For this case we must indicate the value of the following expression, expressed in scientific notation:

We have that for multiplication properties of powers of the same base, the same base is placed and the exponents are added:

Then, rewriting the expression we have:

Answer:

Detective PI can have 13 days of Orange juice before she runs out
It would be 0.2222 so it's your answer
B is true because 0-(-x) = 0 + x = x
An item that costs $30, when discounted 15 percent, will cost $25.5. The easiest way of calculating discount is, in this case, to multiply the normal price $30 by 15 then divide it by one hundred. So, the discount is equal to $4.5. To calculate the sales price, simply deduct the discount of $4.5 from the original price $30 then get $25.5 as the sales price.