Let T(I) denote the income tax, in dollars, that you pay on a yearly income of I dollars. The rate of change dT /dI is known as the marginal tax rate. Required:
Explain the meaning of the marginal tax rate in practical terms.

Little’s law firm has just one lawyer. customers arrive randomly at an average rate of 6 per 8 hour workday. service times have a mean of 50 minutes and a standard deviation of 20 minutes. how long does a customer spend at little’s law firm on average?

Diane owes $387 to her brother. if she debits her bank account $161.25 a month to pay him back, how many months will it take her to pay off the debt?

Which expression gives you the distance between the points (5,1)and(9,-6)