What does this mean, im doing khan academy (4/3) to the power of 2 =

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.

Write a description of each inequality. 1. -5a + 3 > 1 2. 27 - 2b < -6 (this < has a _ under it) 3. 1/2 (c + 1) > 5 (this > has a _ under it)

The function f(x)= x5+ ( x + 3)2 is used to create a table. if x = -1 then what is f(x)?