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3 years ago

For f(x) = 6x + 20, what is the value of x for which f(x)= -4 ?

Mathematics

1 answer:

Ymorist [56]3 years ago

3 0

Answer:

x = -4

Step-by-step explanation:

Plug in -4 into the function and solve for x:

f(x) = 6x + 20

-4 = 6x + 20

-24 = 6x

-4 = x

So, the answer is x = -4

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Answer:

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3 years ago

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If f(x) = 3 ^ x - 7 and g(x) = x ^ 2 + 11 , the value of f(2) - g(7) is:

Maurinko [17]

Answer:

The value of $f(2) - g(7)=-58$

Step-by-step explanation:

We have

$f(x) = 3 ^ x - 7\\\\f(2) = 3 ^ 2 - 7\\\\=9-7\\\\=2\\\\g(x) = x ^ 2 + 11\\\\g(7) = 7 ^ 2 + 11\\\\=49+11\\\\=60\\\\f(2) - g(7)=2-60\\\\=-58$

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3 years ago