-write each product using an exponent 6 x 6 =

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

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?