Nora and mindy are going to a movie. mindy forgot her money and is going to pay nora back later. the cost of the two tickets is $15.50 and a bucket of popcorn is $3.74. what is the total cost that nora will pay for two tickets and one bucket of popcorn? $18.24 $21.54 $19.24 $18.80

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.

50 points~ ! i have to turn this in tomarrow

Candice uses the function f(t)=t+100−−−−−−√ to model the number of students in her after-school program. the variable t represents days and f(t) represents the number of students. how many days does it take for there to be 15 students in her program? a. 225 days b. 125 days c. 325 days d. 115 days