Given b = {a, l, g, e, b, r} and c = {m, y, t, h} , find b u c.
{}
{a}
{a, b, e, g, h, l, m, r, t, y}

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50