How did desertification affect ancient human migration in Africa? Human migration patterns were unaffected by desertification. Desertification encouraged human settlement in arid environments. Desertification hindered human migration by flooding. Desertification forced human populations to relocate to more habitable regions.

Let \( y=5 x^{2}+2 x+3 \). If \( \Delta x=0.2 \) at \( x=4 \), use linear approximation to estimate \( \Delta y \) \( \Delta y \approx \)

Use intercepts to graph the linear function. \( 4 x=3 y+12 \)

Let \( f(x)=x^{2}-8 \) and \( g(x)=15-x \). Perform the composition or operation indicated. \( \left(\frac{f}{g}\right)(-3) \)

Wescribe la utilidad de los aprendizajes desarnollados en el movitub en tus actividades diarias.

What is the sum of the first three terms of the sequence \( 3,15,75,375 \ldots \) ?