A number raised to the fourth power

In 2014, the three largest economies in the world were (listed in order, from largest): a) the u. s., china, germany. b) the u. s., china, japan. c) china, the u. s., japan. d) china, the u. s., germany.

Dagne measures and finds that she can do a vertical jump that is 27.5% of her height. if dagne is 48 inches tall, how high can she jump? enter your answer in the box. inches

How do you find percent change? ? i will give brainliest for the bestme i don’t understand