Zero cant be classified as which type of number

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

Alex took his brother to a birthday party. the party was scheduled to last for 1 and 3/4 hours but they stayed for 4/5 of an hour more. how long did she stay at the party?

George writes the mixed number as sum and uses the distributive property 1/2.-2/5=1/2-2+2/5=1/2