Anybody a expert or really good at social studies cuz I really need that help answer ASAP

Which statement is always true? a negative exponent cannot be part of an expression's numerator. a negative base raised to the power of 2 has a negative value. a negative base raised to the power of 2 has a positive value. any number to the first power is zero.

Barbara's piano instructors house is 7 1/8 miles from her house. after biking for 1 3/4 miles she stops to rest how much longer does she need to bike to reach her instructor's house

Julia chooses a card at random from her set of cards. what is the probability that the card is labeled cat or hamster?