One hundred grams of radium are stored in a container. Rp = initial amount, R = current amount, 1600 years = half life for radium226, t = time elapsed (Initial to current years),
To the nearest year, how many years must pass for 5 grams?

If the value of x increases by 5, how does the value of m(x + 3) change? a) it increases by 5m. b) it increases by 8m. c) it decreases by 5m. d) it decreases by 8m.

Me find the value of x each figure.

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?