Tony bought a sweatshirt with an original price of $48, and he then used a coupon for a 20% discount. Keith bought an identical sweatshirt at a different store for $42.95. Which statement is true? Answer correctly and fast to get brainliest!

Is a positive integer raised to a negative power always positive

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?

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?