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natka813 [3]
3 years ago
6

Andrew buys books and videos in a store. He uses the expression 4b + 8v to find the cost of what he is buying, where b is the nu

mber of books and v is the number of videos he buys. Use the expression to find the total cost of 3 books and 7 videos. Total cost =
Mathematics
1 answer:
7nadin3 [17]3 years ago
7 0

Answer:

68

Step-by-step explanation:

1) Plug In (when you plug in you replace the defined variable with the number given. usually you have to find the numbers to plug in but since they're already given to you you just plug them in.) 4(3) + 8(7)=T   T= total cost

2) Multiply 4*3=12 8*7=56

3) Add 12+56=68

4) <u>T=68</u>

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vodomira [7]

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3 years ago
10. At the end of the day, Mandy sold the rest of her hot dogs at her hot dog stand for half price. 50
vekshin1

Answer:

56

Step-by-step explanation:

Firstly, we know she sold 24 hot dogs at half price. We do not know the total number of hot dogs.

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4 0
3 years ago
Find the value of x and y please
Oksanka [162]

Answer:

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8 0
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I'd do this in reverse order.  Mult. each of the 3 terms inside parentheses by 4:

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