The grades on a math midterm at Springer are roughly symmetric with 4 = 68 and 9 = Brandon scored 71 on the exam. Find the Z-score for Brandon's exam grade. Round to two decimal places.​

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

What are the values of each variable in the diagram below?