Bill has to figure out the area of his square yard. he knows that one side of his yard is equal to the length of his garage. the demensions of his rectangular garage are 15 by 10. what is the area of the yard?

(01.04 mc) an ice sculpture is melting because of heat. assuming its height changes bynegative 5 over 32m every hour, what will be the change in height after 4 hours?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

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?