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Dahasolnce [82]
3 years ago
8

At the movies, you order 3 boxes of popcorn and a bottle of water. The cost of the bottle of water is $1.75. Your total cost is

$9.25. Write and solve an equation to find the cost of one box of popcorn.
Mathematics
2 answers:
VARVARA [1.3K]3 years ago
5 0

The equation is 1.75+3x=9.25. 1st step is to subtract 1.75 on both sides, which will leave you with 7.5. Divide that by 3 and x=2.5 which means that one box of popcorn costs $2.50

maksim [4K]3 years ago
4 0

3w = $9.25 would be the equation in this case. In order to solve it, you must divide $9.25 by 3. $9.25 / 3 = $3.83 (repeating bar over the second 3). The cost of one box of popcorn is $3.83.

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Answer:

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c) The profit function is obtained from substracting the const function C(p) from the revenue function R(p)

P(p) = R(p) - C(p) = p*q(p) = -4 p^2 + 107 p - (-26.75p + 939) = \\\\-4 p^2 + 133.75 p - 939

d) Lets find out the zeros and positive interval of P. Since P is a quadratic function with negative main coefficient, then it should have a maximum at the vertex, and between the roots (if any), the function should be positive. Therefore, we just need to find the zeros of P

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