Find the value of the expression using the given values.
?x = -1, y = 2
A. 3
B. 
C. 1
D. 2
Answer: B
Mathematics
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Multiply and simplify.
? 3b
A. 
b
B. 
C. 
D. 11b
Mathematics
Determine whether the relation is a function.{(-9, 2), (-9, 5), (2, 7), (4, -1), (9, 4)}
A. Function B. Not a function
Mathematics
Find the reference angle of the given angle.-517°
A. 113° B. 67° C. 157° D. 23°
Mathematics
Find parametric equations (not unique) for the circle (give an interval for the parameter values) and find a description in terms of x and y.a circle centered at (4, 3) with radius 2, generated counterclockwise
A. x = t - 4, (y - 3)2 + t2 = 4, for 0 < t < 2?; x2 + y2 = 2
B. x = 3 + 2 sin t, y = 4 + 2 cos t, for 
< t < 
; x2 + y2 = 2
C. x = 4 + 2 cos t, y = 3 + 2 sin t, for 0 < t < 2?; x2 + y2 = 2
D. x = 4 + sin t, y = 3 + cos t, for 
< t < 
; x2 + y2 = 2
Mathematics