Determine if the sequence is arithmetic. If the sequence is arithmetic, find the common difference.a1 = -3, an = 3an - 1 - 4
A. yes, 3
B. yes, 4
C. no
D. yes, -4
Answer: C
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Solve.The population of a particular city is increasing at a rate proportional to its size. It follows the function P(t) = 1 + ke0.04t where k is a constant and t is the time in years. If the current population is 16,000, in how many years is the population expected to be 40,000? (Round to the nearest year.)
A. 10 yr B. 23 yr C. 128 yr D. 13 yr
Sketch D and g(D) from the description of D and change of variables 
u = xy, v = 
where D is the rectangle 1 ? x ? 4, 
? y ? 2
?
A.
 ? |  |
B. None of these.
C.
 ? |  |
D.
 ? |  |
Approximate the area under the curve and above the x-axis using n rectangles. Let the height of each rectangle be given by the value of the function at the right side of the rectangle.y = x2 from x = 0 to x = 4; n = 4
A. 27 B. 33 C. 36 D. 30
Identify the points in the graph for the ordered pairs. 
(-5, -4), (0, -3)
A. I and J B. A and G C. A and J D. G and I