Match the equivalent expressions 4(2x + 3) - 7x

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

Which type of graph would allow us to quickly see how many students between 100 and 200 students were treated?

The graph of f(x) = |x| is transformed to g(x) = |x + 11| - 7. on which interval is the function decreasing?