A part-time cashier makes $8.75 per hour. She works 3 12 hours on Monday, 4 3/4 hours on Tuesday, and 5 1/2 hours on Thursday. What were her total
earnings for the week?

How can you decide witch operations to use to slice a two step equation

Abox of chocolates costs $7. which equation relates the number of boxes sold (x) and total cost of the boxes sold (y)?

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.