Points of discontinuity.
y = cot x, [0, 2 \[\pi \] ]

Which one ? is the answer and how to find this answer

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265