How can you determine the total cost of an item including tax if you know the price of the item and the tax rate?

Over the last 8 nights, elyse earned the following in tips: {105, 120, 84, 95, 100, 132, 140}. if she earns $140 a night for the next four nights, which measure of center would increase more, the mean or median?

Write the equation in logarithmic form e^x=403.429

Solve 4 ln x=2ln25 a) x=5 b) x=25 c) x=625