A 1000-ft –long pipeline requires an excavation 4 ft wide to an average depth of 5 ft. If the soil is dry common earth(angle of repose = 32°), what size triangular spoilbank will be created by the excavation?(The pile length is 300ft. and soil’s swell will be25%)

Atype of plant is introduced into an ecosystem and quickly begins to take over. a scientist counts the number of plants after mmonths and develops the equation p(m)= 19.3(1.089)^m to model the situation. most recently, the scientist counted 138 plants. assuming there are no limiting factors to the growth of the plants, about how many months have passed since the plants werefirst introduced? a)o 6.1b)0.6.6c)10 72d)o 23.1