Leona saved $102.50 to buy a computer that is on sale. How much more money does she need to save before she can buy the computer
2 answers:
You might be interested in
For this case, we must find an expression equivalent to:
By definition of power properties we have:
Rewriting the previous expression we have:
The "-" are canceled and we take into account that:
So:
According to one of the properties of powers of the same base, we must put the same base and add the exponents:
Answer:
Option B