Solve the problem.Let A(x) be the area of the region bounded by the t-axis and the graph of y = f(t) from t = 0 to t = x. Consider the following graph where f(t) = 12. Find A(6) and find a formula for A(x).
A. A(6) = 72; A(x) = 12x
B. A(6) = 72; A(x) = 12x2
C. A(6) = 36; A(x) = 12 + x
D. A(6) = 144; A(x) = 12x
Answer: A
Mathematics
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