Find the derivative of y with respect to x, t, or ?, as appropriate.y = ln(x - 2)
A. 
B. 
C. - 
D. 
Answer: D
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Solve the equation.(6.2)2 = (13.3)2 + (15.5)2 - 2(13.3)(15.5)cos ? for 0° < ? < 90°
A. 58.1 B. 25.3° C. 21.3° D. 23.3°
Write the decimal as a fraction or mixed number. Simplify, if possible.54.301
A. 
B. 
C. 54
D. 10
Solve the problem.The temperature of water in a certain lake on a day in October can be determined by using the model 
where x is the number of feet down from the surface of the lake and y is the Celsius temperature of the water at that depth. Based on this model, how deep in the lake is the water 8 degrees? Round to the nearest foot.
A. 69 ft B. 13 ft C. 43 ft D. 32 ft
Solve.The sum of the squares of the digits of a positive two-digit number is 61, and the tens digit is 1 more than the units digit. Find the number.
A. 56 B. 54 C. 45 D. 65