Swbat understand and interpret functions notation

1. let f(x)=x^2+2x
find and simplify: f(-3)

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares

Don't know how to find x given these segment lengths

Find the solution set of this inequality. enter your answer in interval notation using grouping symbols. |8x-4| ≤ 12