1. Melissa went to lunch with two friends. She purchased 3 corn dogs, 2 fruit cups, and
3 drinks for $15. One of her friends bought 1 corn dog, 2 fruit cups, and a drink for
$9. Her other friend spent $12 on 3 corn dogs and 2 drinks. Write a system of linear
equations that can be used to find c, the cost per corn dog, f, the cost per fruit cup,
and d, the cost per drink.

The class wants to raise a total of $750.if they receive a profit of $1.25 from each candybar sold, how many bars must they sell to reachtheir goal

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.

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?