Mrs Lee had $7500 in her bank account. The bank paid 4% interest at the end of each year. How much did she have in the bank at the end of 1 year?

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)

The area of a circle is equal to 1 dm². find the radius of the circle.