Express 145 feet below sea level as an integer

Could someone with number 1 and 2

Simplify. −4x^2 (5x^4−3x^2+x−2) −20x^6−12x^4+8x^3−8x^2 −20x^6+12x^4−4x^3+8x^2 −20x^8+12x^4−4x^2+8x −20x^6+12x^4+4x^3−8x^2

You eat $0.85 for every cup of hot chocolate you sell. how many cups do you need to sell to earn $55.25