Is 4 a triangular prism? and what shape is 6?

What is the value of 1/3x + 7x when x = 5

225/100 of last years cost. write each fraction as a decimal and as a percent

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.