In a bag of keys, there are 15 silver keys, 7 black keys, 8 copper keys, and 2 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?

Consider the function f(x)=-5x+3 what is f(-2)

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

For the feasibility region shown below find the maximum value of the function p=3x+2y