A company has found that its rate of expenditure (in hundreds of dollars) on a certain type of job is given by E'(x) = 12X + 2, where x is the number of days since the start of the job. Find the total expenditure if the job takes 7 days.
A. $30,800
B. $86
C. $8,600
D. $308

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Ответ:

mhurtado143

01.12.2022

Mathematics

In the graph, the vertex of the parabola hits point (-1,-2). Therefore, the axis of symmetry is x = -1. It is not y = -2, since the parabola opens vertically, not horizontally.

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A company has found that its rate of expenditure (in hundreds of dollars) on a certain type of job is given by E'(x) = 12X + 2, where x is the number of days since the start of the job. Find the total expenditure if the job takes 7 days. A. $30,800 B. $86 C. $8,600 D. $308