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2 years ago

Find f(-2) for f(x) = 3x +4.

Mathematics

1 answer:

Bingel [31]2 years ago

5 0

Answer:

f(- 2) = - 2

Step-by-step explanation:

To evaluate f(- 2) substitute x = - 2 into f(x)

f(- 2) = 3(- 2) + 4 = - 6 + 4 = - 2

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(4*7.2) + (7.2*12) + (12*4)

28.8 + 86.4 + 48

163.2

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2 years ago

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2 years ago

Find a number n when decreased by 9 equals 17

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Answer:

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Step-by-step explanation:

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2 years ago

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What is the conjugate of -1-5i?

NARA [144]

Answer:

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Step-by-step explanation:

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2 years ago

A company provides a monthly pension to its employees. A person retiring at 62 retires and receives a full monthly pension. If t

IRISSAK [1]

Answer:

The reduction is 8.6%

Explanation:

Call F the full monthly pension of a person retiring at 62.

If a person continues to work the pension grows at a rate of 6% per year, compounded monthly, so use the compounded growing formula:

$Pension=F(1+r/12)^{12t}$

Where r = 6 / 100 = 0.06, and t = number of years after retirement.

For retirement at 65.5:

t = 65.5 - 62 = 3.5

$Pension=F(1+0.06/12)^{12\times 3.5}=1.233F$

For retirement at 67:

t = 67 - 62 = 5

$Pension=F(1+0.06/12)^{12\times 5}=1.349F$

Percent reduction of people who retire at 65.5 compared to what they would receive at 67:

$(1.349F-1.233F)\times 100/(1.349F)=8.6\%$

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3 years ago