Determine the coefficient and degree of the monomial.-15xy
A. coefficient: 2, degree: -15
B. coefficient: 15, degree: 1
C. coefficient: -15, degree: 2
D. coefficient: -15, degree: 1
Answer: C
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Find numbers a and b, or k, so that f is continuous at every point.
A. k = 
B. k = 5
C. k = 
D. k = - 
Multiply and simplify any radicals in your answer. Assume that all variables represent positive real numbers.2
(
+ 
)
A. 2
+ 10
B. 10
+ 10
C. 2
+ 5
D. 2
+ 5
Graph the given function. Identify the vertex and the intercepts.y = 3 -x2 - 2x
A. Vertex: (1, 4)
x-intercepts: -1 and 3
y-intercept: 3
B. Vertex: (- 1, 4)
x-intercepts: -3 and 1
y-intercept: 3
C. Vertex: (- 1, - 4)
x-intercepts: -3 and 1
y-intercept:-3
D. Vertex: (- 1, 4)
x-intercepts: -1 and 3
y-intercept: 3
Use a coterminal angle to find the exact value of the expression. Do not use a calculator.cot 
A. 
B. 
C. 1
D. 