How is solving an inequality similar to solving an equation? how is it different?

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?

What is the lcm of 16 and 40 ? 24 and 40 ?

If abcde is reflected over the x-axis and then translated 3 units left, what are the new coordinates d?