Estimate by rounding as directed.50 + 0.582 + 79.99; nearest one
A. 131
B. 129
C. 132
D. 128
Answer: A
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Use the information given about the angle ? to find the exact value of the indicated trigonometric function.tan ? = 
, ? < ? < 
Find sin 
.
A. 
B. - 
C. 
D. - 
Match the function with the graph that best describes the situation.The height of an animal as a function of time.
A. 
B. 
C. 
D. 
Find the logarithm. Give an approximation to four decimal places.ln (5.15 × 1018)
A. 1.6390 B. 29.5020 C. 43.0855 D. 4.5294
Solve the problem.If friction is ignored, the time t (in seconds) required for a block to slide down an inclined plane is given by the formula t = 
where a is the length (in feet) of the base and g ? 32 feet per second per second is the acceleration of gravity. How long does it take a block to slide down an inclined plane with base a = 10 when 
If necessary, round the answer to the nearest tenth of a second.
A. 0.3 sec B. 1.2 sec C. 1.4 sec D. 1.1 sec