Find the magnitude and direction angle for the following vector. Give the direction angle as an angle in [0°, 360°) rounded to the nearest tenth.-2i + 5j
A. 29, 111.8°
B. 7, 291.8°
C. 
, 68.2°
D. 
, 111.8°
Answer: D
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Decide whether the relation is a function.{(-4, -1), (-2, 5), (1, 6), (8, 1)}
A. Function B. Not a function
Rewrite as a terminating decimal.
A. 0.4625 B. 0.563 C. 0.5625 D. 0.5725
Solve the problem.The elasticity ? of a particular thermoplastic can be modeled approximately by the relation 
, where T is the Kelvin temperature. If the thermometer used to measure T is accurate to 1%, and if the measured temperature is 476 K, how should the elasticity be reported?
A. ? = ± 0.004 B. ? = 0.174 ± 0.004 C. ? = 0.174 ± 0.002 D. ? = 0.174
Find an equation of the line described. Write the equation in slope-intercept form if possible.Through (-4, -33) and (10, 79)
A. y = - 
x - 
B. y = -8x - 65
C. y = 8x - 1
D. y = 
x - 