Need on this answer asap remember to check for extraneous solutions1/x + 1/3x^2 = 1/3xa) { -1/2} b) { 6}c) { -13/6, 1/2}d) {1/2}

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual 

Plot a point at the y-intercept of the following function on the provided graph. 3y=-5x+7 20 points