Solve using substitution x = 3y + 1 2x + 4y = 12​

What signals you that factoring by grouping is the best method to use when factoring a problem?

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.

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16