What equation results from completing the square and then factoring?
x2 - 8x = 39
o a. (x-8)2 = 55
o b. (x-8)2 = 23
o c. (x-4)2 = 23
o d. (x-4)2 = 55

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?

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Alex took his brother to a birthday party. the party was scheduled to last for 1 and 3/4 hours but they stayed for 4/5 of an hour more. how long did she stay at the party?