In Yellowstone National Park there are 300 species of birds that migrate. This accounts for 2/7 of all the species of birds sighted in the park. Write an equation to find the number of species of birds that have been sighted in Yellowstone National Park.

Valentino starts with a population of 1,500 amoebas that increases 35% in size every hour for a number of hours, h. the expression 1,500(1+0.35)h finds the number of amoebas after h hours. which statement about this expression is true? a. it is the initial population raised to the growth factor after h hours. b. it is the sum of the initial population and the percent increase. c. it is the sum of the initial population and the growth factor after h hours. d. it is the product of the initial population and the growth factor after h hours.

1. are the triangles similar and if so why? what is the value of x? show your work.

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1