Bob had $150. He spent 20% of his money on a watch and half the remainder on computer memory.

a) What percentage of the money did he have left?

b) How much money did he have left?

Which polynomial function has x intercepts -1, 0, and 2 and passes through the point (1, -6)

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. how many hours after the truck's departure will the two meet?

An arithmetic series a consists of consecutive integers that are multiples of 4 what is the sum of the first 9 terms of this sequence if the first term is 0