Multiply.-3 ? 5
A. -15
B. -115
C. -150
D. -20
Answer: A
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Solve the problem.When the angle of elevation of the sun is ?, a tree casts a shadow. Which trigonometric function models the length of the tree's shadow?
A. tan ? B. cos ? C. cot ? D. sin ?
Evaluate the polynomial.x2 + y2 - z2 for x = 1, y= 3, and z = 4
A. -6 B. 9 C. 26 D. 10
Provide an appropriate response.The probability distribution for the random variable X is: 
What is the expected value of X?
A. 0.62 B. 0.26 C. 0.22 D. 0.50
Graph the given function. Identify the vertex and the intercepts.y = 8 -x2 + 2x
A. Vertex: (1, 9)
x-intercepts: -2 and 4
y-intercept: 8
B. Vertex: (1, - 9)
x-intercepts: -2 and 4
y-intercept:-8
C. Vertex: (- 1, 9)
x-intercepts: -4 and 2
y-intercept: 8
D. Vertex: (1, 9)
x-intercepts: -4 and 2
y-intercept: 8