Plz help me with this I suck at math and don’t understand this. It’s worth 12 points!

Guests at an amusement park must be at least 54 inches tall to be able to ride the roller coaster. which graph represents the set of heights that satisfy this requirement?

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

Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min. if they did not stop driving, how many miles could kyle and elijah drove in a whole day? ? 1 day = 24 hours. plzzz write a proportion i will give you 100 points