Stellar cell phones charges $0.10 per extra gigabyte of data and a monthly fee of $15. Cell Phones ‘R Us does not charge a monthly fee, but they charge $0.15 per extra gigabyte of data. Which inequality represents the situation when Cell Phones ‘R Us is cheaper than Stellar Cell Phones?

These question are hard can you me with answers

Write the expression in simplified radical form. show all steps and work including any foil method work. (hint: use the conjugate. no decimal answers.) (9-2√3)/(12+√3)

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?