In a bag of keys, there are 12 silver keys, 5 black keys, 10 copper keys, and 3 painted keys of various colors. one key is drawn out at random. what is the probability that the key that is drawn is silver or copper?

The amount of energy it takes to lift a box might be a function of which of the following

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

What does the sign of the slope tell you about a line?