Find the sum of the geometric series given a1=−2, r=2, and n=8. A. 2
B. -489
C. -478
D. -510

Which shows the pre image of triangle xyz

The focus of parabola is (-4, -5), and its directrix is y= -1. fill in the missing terms and signs in parabolas equation in standard form

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?