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KengaRu [80]
3 years ago
15

A bookstore costs $90 a day to keep open, and it spends $13 for each book-

Mathematics
1 answer:
enot [183]3 years ago
7 0

Answer:

n = 30

Step-by-step explanation:

since it cost 90 to keep open, the equation needs to equal 90

90 = ?

because it cost 13 for a book and x equals the amount of books

90 = -13x

because you make 16 for each book

90 = -13x + 16x

now you can simply

90 = 3x

x = 30

so the answer is 30

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umka2103 [35]

Answer:

1/26

Step-by-step explanation:

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3 years ago
Manny is an online student who currently owns an older car that is fully paid for. He drives, on average, 110 miles per week to
Step2247 [10]

Answer:

The new car costs more

Old car = $5062.125

New car = $7161.357

Step-by-step explanation:

Manny drives an average of 110 miles per week with his old car. The old car gets 16 miles per gallon. The cost per gallon is $2.65 repair and Maintainance costs an average of $740 per year.

For the old car, to find the amount spent on the car we have

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The car gets 28 miles per gallon. It requires a maintenance f $10 per month. For the new car to find the amount, we have

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5 0
2 years ago
A new school banner is to be 4 1/2 feet wide by 7 1/4 feet long. what is the area? if a fabric for the banner costs $6 a square
lilavasa [31]

The area is 32 5/8 ft squared and It would cost$ 195.75


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3 0
3 years ago
Please explain to me to have a better understsning. . .​
dem82 [27]

For the first one:

m is the slope, or how much the line goes up compared to goes right.  In this case, the line goes up 40 every time it goes right 10.  We write this as a fraction so 40/10, which simplifies to 4.  Therefore the equation would be y = 4x.

7 0
3 years ago
Find x if the area of the rectangle below is 124 square inches. WHAT IS THE
Tomtit [17]

Answer:

Step-by-step explanation:

(6x+1)4 = 124

6x+1 = 31

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4 0
3 years ago
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