Why are the number of digits reported in scientific measurements important?

Which expressions are equivalent to k/2 choose 2 answers: a k-2 b 2/k c 1/2k d k/2 e k+k

Subscriptions to a popular fashion magazine have gone down by a consistent percentage each year and can be modeled by the function y = 42,000(0.96)t. what does the value 42,000 represent in the function?

Will give brainliest immeadeately true or false: the origin woud be included in the solution set for the inequality: y< 2x-5