Find the product ab if possible a = (1 -6 1 -8 -1 -9 -4 -1 -9) b = (-4 -5 1 -3 3 -4 -1 4 9)

Tobias gold sells computers at the office center he's guaranteed a minimum salary of $1,959 per month plus 6.3% commission on total sales how much in total sales is he