A person weighing 150 pounds burns about 320 calories per hour walking at a moderate pace. Suppose that the same person burns an average of 1500 calories per day through basic activities. The total calories y burned by that person can be represented by the equation y = 320x + 1500, where x represents the number of hours spent walking.

Two parallel lines are crossed by a transversal. what is value of x

What is the solution set of the quadratic inequality x^2-5< or equal to 0

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?