Graph the function.y = 2 cos (3x - ?)
A. 
B. 
C. 
D. 
Answer: D
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Calculate the area of the surface S.S is the lower portion of the sphere x2 + y2 + z2 = 25 cut by the cone z = 
.
A. 10
?
B. 25
?
C. 25
D. 50
?
Find the indicated measure of central tendency.The speeds (in mph) of the cars passing a certain checkpoint are measured by radar. The results are shown below. Find the midrange.44.2?41.0?43.0?40.9?43.040.4?44.7?41.5?44.2?42.844.0?41.5?40.9?44.0?41.0
A. 42.8 B. 4.30 C. 42.30 D. 42.55
Find the specified vector or scalar.u = -2i + 4j and v = -6i - 16j; Find 
.
A. 4
B. 
C. -3
D. 4
If the number in the statement is written in scientific notation, write it without exponents. If it is written without exponents, write it in scientific notation.The life span of the average male human being is approximately 37,843,200 minutes.
A. 3.78432 × 106 min B. 3.78432 × 107 min C. 3.78432 × 105 min D. 37.8432 × 106 min