If 11 - 3(-12x/6 + 8) = 7 + 8(3x/4 -3) + 4, how many solutions does this equation have?

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

Someone me! if you’re smart you can solve this!

Acyclist bike x distance at 10 miles per hour .and returns over the same path at 8 miles per hour.what is the cyclist average rate for the round trip in miles per hour ?