3 years ago

For which x is f(x)=-3? -7 -4 4 5

Mathematics

1 answer:

valina [46]3 years ago

7 0

It is going to be (-7)

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Step-by-step explanation:

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3 years ago

Jane has a pre-paid cell phone with Splint. She can't remember the exact costs, but her plan has a monthly fee and a charge for

yan [13]

Answer:

The costs of the plan are $0.15 per minute and a monthly fee of $39

Step-by-step explanation:

Let

x ----> the number of minutes used

y ----> is the total cost

step 1

Find the slope of the linear equation

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have the ordered pairs

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substitute

$m=\frac{138-54}{660-100}$

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step 2

Find the equation of the line in point slope form

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$m=0.15\\point\ (100,54)$

substitute

$y-54=0.15(x-100)$

step 3

Convert to slope intercept form

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$y-54=0.15x-15\\y=0.15x-15+54\\y=0.15x+39$

therefore

The costs of the plan are $0.15 per minute and a monthly fee of $39

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3 years ago

1 2/3 yards of chain cost 9.00 how much does it cost per chain

Lady_Fox [76]

Lets make it an improper fraction
5/3
we do not know how many chains so we'll put the (x)

therefore
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The perpendicular gradient is 2x

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2 years ago

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