Acity has a population of 1300. if the population grows by 30%. what will be the city new population

Given this information, which expression must represent the value of b?

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 angle 2=3x +1 and angle 3=2x +4what is angle 2