Suppose that g(x) = f(x + 4) + 2. which statement best compares the graph
of g(x) with the graph of f(x)?
a. the graph of g(x) is the graph of f(x) shifted 4 units to the right
and 2 units up.
b. the graph of g(x) is the graph of f(x) shifted 4 units to the left and
2 units down.
c. the graph of g(x) is the graph of f(x) shifted 4 units to the right
and 2 units down.
d. the graph of g(x) is the graph of f(x) shifted 4 units to the left and
2 units up.

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?