Solve the problem.The sales in thousands of a new type of product are given by S(t) = 130 - 80e-0.1t, where t represents time in years. Find the rate of change of sales at the time when 
A. 6.6 thousand per year
B. -9.8 thousand per year
C. 9.8 thousand per year
D. -6.6 thousand per year
Answer: A
Mathematics
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A. x2 + 12x + 11 B. 2x2 + 12x - 110 C. x2 - 110x + 12 D. 2x2 - 12x - 110
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Solve the problem.A wheel with a 21-inch diameter is turning at the rate of 44 revolutions per minute. To the nearest inch, what is the speed of a point on the rim in in./min?
A. 2949 in./min B. 2956 in./min C. 2903 in./min D. 2910 in./min
Mathematics
Find the intercepts and then graph the line.-3y - 4x = 12
A. x-intercept: (3, 0); y-intercept: (0, -4)
B. x-intercept: (3, 0); y-intercept: (0, 4)
C. x-intercept: (- 3, 0); y-intercept: (0, 4)
D. x-intercept: (- 3, 0); y-intercept: (0, -4)
Mathematics
Multiply.5(-6)(-6)
A. 190 B. -60 C. 180 D. -180
Mathematics