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shepuryov [24]
3 years ago
8

Please help me on #20 and #21 and I will help you back;)

Mathematics
1 answer:
nevsk [136]3 years ago
5 0
3x9 = 27
2x4 = 8
4x3 = 12

27+8 = 35
35+12 = 47
47-10 = 37

You have 37$ left to pay. You get your answer by multiplying the amount of dinners or meals by the money, and add them all together and subtract the 10$ coupon.
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3 0
3 years ago
The revenue from selling x shirts is r(x)=12x.
kenny6666 [7]

Answer:

p(x) = 7x - 20

Step-by-step explanation:

A company makes a profit selling goods when the revenue taken in from the sales is greater than the cost of those goods:  p(x) = r(x) - c(x) > 0.

In this case the revenue function is r(x) = 12x; the cost function is c(x) = 5x + 20, and the profit function is p(x) = 12x - (5x + 20), or:

p(x) = 12x - 5x - 20, or

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4 0
3 years ago
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Answer:

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Step-by-step explanation:

6 0
2 years ago
A total of 396 tickets were sold for the school play. They wee either adult tickets or student tickets. The number of student ti
Flura [38]

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3 years ago
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