What is the value of n in the equation 0=18+128n^2?

Write the equation below the represents the line passing through the point (-3, -1) negative one with a slope of 4

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

Alcoa was $10.02 a share yesterday. today it is at $9.75 a share. if you own 50 shares, did ou have capital gain or loss ? how much of a gain or loss did you have ? express the capital gain/loss as a percent of the original price