4/9 of the children at school equals to 720. 30% of the children at school receive box lunch. How many children still has to be fed?​

Which choice represents the sample space ,s for this event

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.

Which value of m will create a system of parallel lines with no solution? y = mx - 6 8x - 4y = 12