find the average rate of change of f(x)=x−2√x on the interval [1,9].

Can someone pls ! pls answer all. no explanation needed..

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.

If there are 3.281 feet in 1 meter, how many inches are in one centimeter