Oscar has 6 tubular neon lights in order to spell out the word VISION to promote his lighting business.It costs £2 to add a corner to a tube, £3 to wire the ends of two tubes together (or the two ends of one tube ).It is free to add smooth curves or to stretch the tubes. How much does it cost oscar to spell the word VISION? Which capital letters of the alphabet is it possible to make with a single tube using the arial font? Justify your answer.