3 years ago

Find an explicit rule for the nth term of the sequence. 7, 21, 63, 189, ...

Mathematics

1 answer:

SpyIntel [72]3 years ago

8 0

Answer:

$7 \times {3}^{n - 1}$

Step-by-step explanation:

using form:

$a \times {r}^{n - 1}$

where a: starting number

where r: common ratio (in this case each next term is 3 times previous term)

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Assume that the total revenue received from the sale of x items is given by, R(x)equals34 ln (4 x plus 5 ), while the total c

katen-ka-za [31]

Answer:

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Step-by-step explanation:

The profit function P(x) is given by the revenue function minus the cost function:

$P(x) = R(x) - C(x)\\P(x) = 34ln(x+5)-\frac{x}{2}$

The number of units sold 'x' for which the derivate of the profit function is zero, is the number of units that maximizes profit:

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The number of units that should be manufactured so that profit is maximum is 63 units.

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