Whats the degree of 5z^3-2z^4-9z^2+z

Ok we can see that contains the variable with the highest exponent, 4, so the degree is 4.

9 hours

Step-by-step explanation:

12 people take 15 hours to complete one job. First let's ask how long it would take 18 people working at the same rate to complete the same job? We can use proportions to answer this

Now we know that one job takes 18 people 22.5 hours, so 2/5 of the job would take