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kirza4 [7]
3 years ago
9

Half of your baseball card collection got wet and was ruined. you bought 14 cards to replace some that were lost.how many did yo

u begin with if you now have 40?
A.80
B.52
C.94
D.66
Mathematics
1 answer:
Mamont248 [21]3 years ago
4 0

Because you added 14 cards to your collection, we'll have to subtract that:

40 - 14 = 26

Knowing that 26 cards is half of your old card deck, we know that your old card deck is:

26*2 = 52

You have option b. 52 cards before.

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Answer:

A. y = 80x

B. g(x) = 80x

C. To graph the equation, plot a point at (0,0) and a point at (1,80). Connect the points. Continue adding points by moving up $80 and over 1 day.

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To write an equation, use y= mx where m is the slope, x is the number of days, and y is the rent cost.

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To find m, use the slope formula with (5,465) and (7, 625).

m=\frac{y_2-y_1}{x_2-x_1}= \frac{625-465}{7-5} =\frac{160}{2} =80

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The equation is y = 80x.

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To graph the equation, plot a point at (0,0) and a point at (1,80). Connect the points. Continue adding points by moving up $80 and over 1 day.


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