Simplify: 1.) 6(4a2+11)-13(3a-2a2)-28

2.) -10+3r+2r2-r

3.) 24-4(5y-6z)+3y-7z

4.) 2.4+8.4q-0.3q-7.9

5.) 5(x-12x2)+3(4x+7x2)

The human resources manager at a company records the length, in hours, of one shift at work, x. he creates the probability distribution below. what is the probability that a worker chosen at random works at least 8 hours? probability distribution px(x) 6 hours 7 hours 8 hours 9 hours 10 hours 0.62 0.78 пол