What is each sum or difference?
(7-2i)+(-3+i)
(1+-2i)
(8+-6i)
(-3+9i)+(3+9i)

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

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?