Solve the problem.A dual-beam search light is positioned to shine on a prison wall. The light is 2 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 ? 6.
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.The charcoal from a tree killed in a volcanic eruption contained 67.2% of the 
found in living matter. How old is the tree, to the nearest year? Use 
for the half-life of 
A. 3269 years B. 1570 years C. 5700 years D. 2266 years
Solve the problem.The floor plan of a building is a rectangle which measures 240 meters by 60 meters. Find the floor area of the building.
A. 600 sq m B. 14,410 sq m C. 14,400 sq m D. 14,390 sq m
Decide whether the given number is a solution of the given equation.Is -1 a solution of x - 8 = 4?
A. yes B. no
Find the largest open intervals where the function is concave upward.f(x) = x3 + 3x2 - 9x + 5
A. None B. (-1, ?), (-?, -1) C. (-?, -1) D. (-1, ?)