Step-by-step explanation:
Both are very correct,

because any number raised to the power of a negative
is given as

if this helped pls give brainliest
Answer: correct.
Step-by-step explanation:
Answer:
$270
Step-by-step explanation:
Price after markup was 1.20($250) = $300
Price after discounting: (1.00 - 0.10)($300) = $270
She would earn $127.05 dollars for babysitting