Find the magnitude of wź for w(-2, 8, -3) and z(1,4, -1).
a 21
c 12
b. 21
d. 24
select the best answer from the choices provided

need quick

Standard deviation of 19,29,21,22,23

Find the value of x. round the length to the nearest tenth

Sally deposited money into a savings account paying 4% simple interest per year. the first year, she earned $75 in interest. how much interest will she earn during the following year? show your work and explain your reasoning in the space provided below.