Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.tan ? = 2, cos ? < 0Find cos 
.
A. 
B. - 
C. -
D. 
Answer: B
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Determine the slope and y-intercept of the line represented by the equation. Graph the line using the slope and y-intercept.2x = 5y - 16
A. m = - 
, y-intercept is (0, - 8)
B. m = - 
, y-intercept is (0, - 
)
C. m = 
, y-intercept is (0, - 8)
D. m = 
, y-intercept is (0, 
)
Graph the exponential function whose equation is given. Start by using -2, -1, 0, 1, and 2 for x and finding the corresponding values for y.y = 
x - 1
A. 
B. 
C. 
D. 
Find the least common multiple (LCM) of the pair of numbers.14 and 7
A. 7 B. 98 C. 686 D. 14
Solve the problem.One method to determine the time since an animal died is to estimate the percentage of 
remaining in its bones. The percent P in decimal form of 
remaining after x years is given by 
Approximate (to the nearest whole year) the age of a fossil if there is 13% of 
remaining.
A. 7323 B. -21,198 C. 16,861 D. -2168