At a warehouse, the employees can unload 18 trucks in 6 hours. what is the unit rate for unloading trucks?

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

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

25 ! i need asap! ! ill mark brainliest!