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MakcuM [25]
2 years ago
9

Christian is training for a swimming competition He starts swimming 10 ft. from the shore to his boat The table below represents

the distance from the shore. f(z), as a function of time after z minutes of swimming.

Mathematics
2 answers:
ahrayia [7]2 years ago
8 0

Answer: it goes up by 60 each time

Step-by-step explanation:

Anna [14]2 years ago
6 0

Answer:

f(x) = 20x + 10

Step-by-step explanation:

(0 , 10) ; (3 , 70)

Slope = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}

          = \frac{70-10}{3-0}\\\\= \frac{60}{3}\\\\= 20

y- intercept = 10

f(x) = mx + c

     = 20x + 10

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3 years ago
The expresssion is also equivalent to the cost of the item? c-0.25 c which expression is also equivalent to the cost of the item
MArishka [77]

Answer:

0.75c

Step-by-step explanation:

If we have an expression as:

a*x + b*x

We can see that both terms in the expression, a*x and b*x have an x, so we can call the x a common factor and we can write an equivalent expression as:

a*x + b*x  = (a + b)*x

If we replace, for example, a by 2, b by 3 and x by 4, we can test the expression as:

2*4 + 3*4  = (2 + 3)*4

 8   +  12  = (5)*4

    20        = 20

Therefore, if we have the following expression:

c - 0.25*c

The expression that is equivalent is 0.75c and it is calculated as:

c - 0.25*c = (1 - 0.25)*c

c - 0.25*c = 0.75*c

8 0
3 years ago
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Answer

D.

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