Which of the following is a nonlinear function?
a.
sam's weekly pay increases by $50 every year stays at the same job.
b.
ronald has a car that depreciates in value by 11% every year.
c.
during a storm, a team of researchers calculates the rain is falling at a rate of 1.2 centimeters per hour.
d.
edith is a member of a magazine subscription program. she pays $11 for five magazines.

For the equation below, x is the input and y is the output. y = -4x + 3 if the input is -8, then the output is

I've been working on this for a few days and i just don't understand, it's due in a few hours. you.the direction of a vector is defined as the angle of the vector in relation to a horizontal line. as a standard, this angle is measured counterclockwise from the positive x-axis. the direction or angle of v in the diagram is α.part a: how can you use trigonometric ratios to calculate the direction α of a general vector v = < x, y> similar to the diagram? part bsuppose that vector v lies in quadrant ii, quadrant iii, or quadrant iv. how can you use trigonometric ratios to calculate the direction (i.e., angle) of the vector in each of these quadrants with respect to the positive x-axis? the angle between the vector and the positive x-axis will be greater than 90 degrees in each case.part cnow try a numerical problem. what is the direction of the vector w = < -1, 6 > ?

20 ! brainliest ! add and simplify your answer.