Add.(4.9) + (-4.9)
A. -24.01
B. 9.8
C. 0
D. -9.8
Answer: C
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Solve the equation.
= 7
A. 8 B. 3 C. 9 D. 14
Solve the problem.A dual-beam search light is positioned to shine on a prison wall. The light is 1 feet from the wall and rotates clockwise. The light shines on point P on the wall when first turned on 
After t seconds the distance (in feet) from the beam on the wall to the point P is given by the function 
When the light beam is to the right of P, the value of d is positive, and when the beam is to the left of P, the value of d is negative. Graph d over the interval 0 ? t ? 5. 
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A. 
B. 
C. 
D. 
Suppose the angle formed by the line y = 4x and the positive x-axis is ?. Find the tangent of ?.
?
?
A. ?
B. 4
C. 5
D. -4
E. 
Decide whether the expression is or is not an identity.
= 1 - cos x
A. Identity B. Not an identity