Final answer:
By multiplying Lucy's amount of $1050 by the exchange rate of 90 yen/dollar, we determine she will have 94,500 Japanese yen for her trip to Japan.
Step-by-step explanation:
The question involves a currency conversion from US dollars to Japanese yen.
To find out how many yen Lucy would have for her trip, we use the given exchange rate of 1 US dollar being equivalent to 90 Japanese yen.
The calculation would be as follows: Lucy has $1050 to spend, so we multiply 1050 by the exchange rate (1050 * 90) to determine how many yen she will have for her trip.
The calculation:
- Multiply the amount in US dollars ($1050) by the exchange rate (90 yen/dollar).
- 1050 dollars * 90 yen/dollar = 94,500 yen.
Therefore, Lucy will have 94,500 Japanese yen to spend on her trip.