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3 years ago

If f(x)=7-3x and g(x)=3x-7, what is the value of f(1) + g(1)

Business

1 answer:

disa [49]3 years ago

6 0

For this question, simply plug in the value of x, as shown below.

$f(1) = 7 - 3(1)$

$f(1) = 7 - 3$

f(1) = 4

$g(1) = 3(1) - 7$

$g(1) = 3 - 7$

g(1) = -4

4 + (-4) is zero, but the answer has to be more than or equal to zero to make sense, so f(1) + g(1) ≥ 0.

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Explanation:

We will use compound interest formula to solve this problem.

The formula is:

$F=P(1+r)^t$

Where

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t is the number of periods

Here,

F is the value we want, after 3 years

P is the present amount, $100

r is the rate of interest per quarter (per period)

Given r = 6% annually, so that would make:

6%/4 = 1.5% per quarter, or 1.5/100 = 0.015

Also, t is the number of quarters in 3 years, that would be 4*3 = 12

Now, substituting, we get our answer:

$F=P(1+r)^t\\F=100(1+0.015)^{12}\\F=100(1.015)^{12}\\F=119.56$

The first answer choice is right, $119.56

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