Evaluate the expression, given x = -2, y = 3, and a = -4.7x + 2y - 9a
A. -4
B. 28
C. 53
D. -49
Answer: B
Mathematics
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Find the particular solution to the given differential equation that satisfies the given conditions.2
+ 7
- 15y = 0; Dy = 0 and y = 3 when x = 0
A. y = 
e-5x + 
e3x/2
B. y = 
e5x + 
e-3x/2
C. y = 
e-5x + 
e3x/2
D. y = - 
e-5x - 
e3x/2
Mathematics
Simplify.
A. -m B. m + 4 C. m D. -(m + 4)
Mathematics
Graph the ellipse, centered at the origin, satisfying the conditions.Foci at (±4, 0),vertices (±8, 0)
A. 
B. 
C. 
D. 
Mathematics
Find the expression.u = 
, v = 
Find u - v
A. 
B. 
C. 
D. 
Mathematics