How many calories are needed?

the correct answer is b

the five characteristics of adolescence are biological growth and development, and undefined status, increased decision making, increased pressure and the search of self.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west