Indicate a general rule for the nth term of this sequence. -6b, -3b, 0b, 3b, 6b. . . a n = 3bn + 9b
a n = -3bn + 9b
a n = 3bn – 9b
a n = -3bn – 9b

An air conditioning system can circulate 350 cubic feet of air per minute. how many cubic yards of air can it circulate per minute?

What is the least common factor of 6 and 8

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?