If f(x)=6x²-x³, then at what value(s) of x does the tangent to the curve f(x)is parallel to line 9x=1+y?

Activity 1.3.2 standard and metric measuring pltw

The biome pictured above is found in areas such as kenya and south africa. the land is grass-covered with very few trees and gazelles and other grazers are common here. why does this biome have a low population of trees? a) large grazing animals destroy the trees. b) it is a deforested rainforest with poor soil. c) it has high temperatures and low precipitation. d) it has a long rainy season followed by flooding.

This is a major archaeological site that was once a regional center to the mayan empire in ancient mesoamerica.