I need a full lecture or just pls explain how this works in an easy way

i think it might be a but you might want a second opinion

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol

sounds & other waves originate from any vibrating object

x-150=475   x=625

step-by-step explanation:

if the bike after the sale ($150) is $475 then just simply add 150 to 475.