The base monthly salary of a salesman working on commission is $10,000. For each additional $50,000 of sales beyond $100,000, he is paid a $1,000 commission. Sketch a graph showing his earnings as a function of the level of his sales x. 400000 15000- 300000 1200000 100000 300000 14000- 13000- Y 12000- 11000 - 10000 100000 200000 300000 400000 5000000000 200000 300000 400000 400000 250000 - 300000 200000 150000 100000 50000- 050000 100000 150000 200000 250000 300000 1200000 100000 100000 200000 300000 400000 Determine the values of x for which the function is discontinuous. (Up to and including $400,000. Enter your answers from smallest to largest.) x=$ (smallest non-zero value) x-$ x-$ x-S x=$ x=$ (largest value)