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Katarina [22]
3 years ago
11

If f (n)= - 3n + 2, what is the value of f(12) ?

Mathematics
2 answers:
adoni [48]3 years ago
7 0

Answer:

Step-by-step explanation:

f(n)= -3n + 2

to find :f(12)

substitute 12 in place of n

f(12)= -3*12 + 2

f(12)=-36 + 2

f(12)= -34

Gemiola [76]3 years ago
3 0

f (n)= - 3n + 2

f(12) =-3(12)+2

= -36+2

= -34

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For this case we have that by definition, the equation of the line in the slope-intersection form is given by:

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m: It is the slope of the line

b: It is the cut-off point with the y axis

We have the following points through which the line passes:

(x_ {1}, y_ {1}) :( 6,13)\\(x_ {2}, y_ {2}): (7900,5)

We find the slope of the line:

m = \frac {y_ {2} -y_ {1}} {x_ {2} -x_ {1}} = \frac {5-13} {7900-6} = \frac {-8} {7894} = - \frac {4} {3947}

Thus, the equation of the line is of the form:

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We substitute one of the points and find b:

13 = - \frac {4} {3947} (6) + b\\13 = - \frac {24} {3947} + b\\13+ \frac {24} {3947} = b\\b = \frac {51335} {3947}

Finally, the equation is:

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Answer:

y = - \frac {4} {3947} x + \frac {51335} {3947}

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My sisters 1 minute work =\frac{1}{30}

My and My sister's 1 minute work =\frac{1}{45}+\frac{1}{30}

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<u>Step-by-step explanation:</u>

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