A savings account increases from $150 to $153. What is the percent increase of the savings account?

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

What is the frequency of the sinusoidal graph?

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?