The figure shows an angle ? in standard position with its terminal side intersecting the unit circle. Evaluate the indicated circular function value of ?.Find sin ?.
A. - 
B. 
C. - 
D. 
Answer: A
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Simplify the difference.(7x + 4) - (4x - 6)
A. 3x - 10 B. 11x + 10 C. 3x + 10 D. 11x - 10
Solve the problem.A certain radioactive isotope decays at a rate of 2% per 100 years. If t represents time in years and y represents the amount of the isotope left then the equation for the situation is 
In how many years will there be 95% of the isotope left?
A. 256 years B. 500 years C. 250 years D. 259 years
Solve.When an object is dropped to the ground from a height of h meters, the time it takes for the object to reach the ground is given by the equation t = 
, where t is measured in seconds. If an object falls 240.1 meters before it hits the ground, find the time it took for the object to fall.
A. 8 sec B. 49 sec C. 7 sec D. 10 sec
Solve the problem.The area of a square is 81 square centimeters. If the same amount is added to one dimension and removed from the other, the resulting rectangle has an area 9 square centimeters less than the area of the square. How much is added and subtracted?
A. 12 cm B. 4 cm C. 9 cm D. 3 cm