On a coordinate plane, a vector has an origin (3, -6) and terminal point (-4,1). Which description of the vector shown is correct?

The magnitude is 7 StartRoot 2 EndRoot, and the direction angle is approximately 315°.
The magnitude is 7 StartRoot 2 EndRoot, and the direction angle is approximately 135°.
The magnitude is StartRoot 6 EndRoot, and the direction angle is approximately 315°.
The magnitude is StartRoot 6 EndRoot, and the direction angle is approximately 135°.

I'll give brainliest if you answer right : )

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?

Jan accidently ran 7 minutes longer than he was supposed to. write an expression for the total amount of time jan ran if she was supposed to run m minutes