Use SSS to explain why the triangles in each pair are congruent . i’m being timed pls help

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Hurry if the population of of an ant hill doubles every 10 days and there are currently 100 ants living in the ant hill what will the ant population be in 20 days