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3 years ago

Suppose that the function f(x)=3 x+1.5 represents the cost to rent x movies a

Mathematics

1 answer:

alexdok [17]3 years ago

5 0

f(x) = 3x + 5

Place 6 in X

f(6) = 3 * 6 + 5 = 23$

23 - 15 = 8$

Sara need more 8$ to rent a movie in Redbox because de sum of 15$ and 8$ is 23$ (the cost to rent 6 movies).

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The first one is 60 ft

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zloy xaker [14]

Answer:

3ab

-------------------

(b+a)

Step-by-step explanation:

3/a - 3/b

-------------------

1/a^2 - 1/b^2

Multiply the top and bottom by a^2 b^2/ a^2/b^2 to clear the fractions

(3/a - 3/b) a^2 b^2

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(1/a^2 - 1/b^2) a^2b^2

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b^2 - a^2

Factor out 3ab on the top

3ab( b-a)

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b^2 - a^2

The bottom is the difference of squares

3ab( b-a)

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3ab

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6 0

3 years ago

Read 2 more answers

Tanya [424]

Answer:

$2.50$

Step-by-step explanation:

Given

$(x_1,y_1) = (-1,0.8)$

$(x_2,y_2) = (0,2)$

$(x_3,y_3) = (1,5)$

$(x_4,y_4) = (2,12.5)$

Required

The rate of change (b)

The above graph is represented as:

$y = ab^x$

For: $(x_2,y_2) = (0,2)$ ;

We have:

$y = ab^x$

$2 = a * b^0$

$2 = a *1$

$2 = a$

$a = 2$

For $(x_3,y_3) = (1,5)$ ,

We have:

$y = ab^x$

$5 = a * b^1$

$5 = a * b$

Substitute $a = 2$

$5 = 2 * b$

Divide by 2

$2.5 = b$

$b = 2.5$

<em>Hence, the rate of change is 2.50</em>

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3 years ago

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The total ages of Sarah, Jake and Matthew add up to 36. Jake is two years younger than Sarah and Matthew is 16 years younger tha

Hatshy [7]

Answer:

Step-by-step explanation:

S+J+M=36

J=S-2 or J=x-2

M=S-16 or M=x-16

6 0

3 years ago

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