Explain the meaning of zero in 3 miled beloe sea level

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

In stepmber, daniel and justin opened a business. during their first three months of business, their average monthly profit was $51. if during their first month, they lost $29, and during their second month, they gained $115, what was their profit or loss for their third plzzz i will give you 299 points

Simplify the following expression 48^1/2