Ubehebe crater in death vally has a diameter of a little more than 1/2 mile. if latisha walks around its rim at a rate of 2 miles per hour, about how long will it take her to walk all the way around the crater. find your answer to the nearest tenth. use 3.14 for pi

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

Arestaurant chef made 1 1/2 jars of pasta sauce. each serving of pasta requires 1/2 of a jar of sauce. how many servings of pasta will the chef be bale to prepare using the sauce?

How many sides does a regular polygon have if each exterior angle measure is 45 degrees explain your answer, i really don't understand this.