

Substitute 51/5x into

Substitute that into

Hope this helps. Answer should be correct. Unless your quadratic equation is wrongly stated.
Hello!
The words at least means that the worker needs to work 8, 9 or 10 hours. We can add probabilities, so we will add .6 (for those working 8 hours), .15 (for those working 9 hours) and .08 (for those working 10 hours) to get a total probability of .83.
Hope this helps!
Answer:
1-a 2-c hope im right
Step-by-step explanation: