Determine the end behavior for function f(x)=5x^4-8x^5

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

Use the x-intercept method to find all real solutions of the equation. -9x^3-7x^2-96x+36=3x^3+x^2-3x+8

1. the wheeling bridge in west virginia is about 307 meters long. if you walk with a stride of about meter, about how many steps would it take you to cross this suspension bridge?