Solve the problem.The amount of money, in dollars, raised each year by a band booster club can be estimated by the function f(x) = 219x - 431,280, where x is the year with 1990 ? x ? 2000. What is the slope of the graph of f?
A. 219
B. -431,280
C. -219
D. 4530
Answer: A
Mathematics
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A. N(t) = (-sin t)i - (cos t)k
B. N(t) = - 
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C. N(t) = (sin t)i + (cos t)k
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A. x-axis only B. no symmetry C. origin only D. x-axis, origin
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Use the product rule to simplify the expression.
A. 294x
B. 7
C. 6x2
D. 7
Mathematics