How do i find the solution of x^3-3x^2+4

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?