TJ makes a salary of $400 a week. He also makes a commission of 15% off of
everything he sells for the week. If his total
sales are $15,000, what is his total pay for
the week?

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?