Question 360032
Putting each equation in slope-intercept form, we get

{{{y = ((k+2)/5)x-8/5}}}, and
{{{y = (k/3)x-3}}}.
Since they're supposed to be paralle, their slopes must be equal:
{{{(k+2)/5 = k/3}}},
{{{3k+6 = 5k}}},
{{{6 = 2k}}},
{{{k = 3}}}.