Last month you spent $20 on art supplies. this month you spent 180% of what you spent last month. how much did you spend this month?

Find the area of a parallelogram with the given vertices. p(-2, -5), q(9, -5), r(1, 5), s(12, 5)

You have 138.72 in your saving account u take out 45.23 and 18.00 you deposit 75.85 into your account

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?