1. Mark earns 5% commission on his sales, plus a base salary of $5,000 per month.
(a) Write the equation in form y = a*x + b, if y is his monthly income in dollars and x
is his sales.
(b) What is the slope?
(c) What is the y-intercept?
(d) Use the equation to determine Mark’s monthly salary if his sales are $20,000?
Confirm this using the graph.
(e) Use the graph to determine Mark’s sales if he wants to earn a monthly salary of
$5,500. Confirm this using the equation.