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Sati [7]
3 years ago
14

Which expression is equivalent to 5 + 15x?

Mathematics
2 answers:
beks73 [17]3 years ago
6 0

Answer:

A. 5(1 + 3x)

Step-by-step explanation:

5(1 + 3x)

(5 × 1) + (5 × 3x)

5 + (5 × 3x)

5 + 15x

A works. Let's check the rest.

1(5 + 3x)

(1 × 5) + (1 × 3x)

5 + (1 × 3x)

5 + 3x

B does not work.

3(5 + х)

(3 × 5) + (3 × x)

15 + (3 × x)

15 + 3x

C doesn't work.

5(3x)

5 × 3x

15x

B, C, and D do not work.

nata0808 [166]3 years ago
6 0
Your answer is a. 5(1 + 3x)
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If f(x)=3x-2 and g(x)=x^2+1, find f(g(-1)) and g(f(3))
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Answer:

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Step-by-step explanation:

We know the definition of both functions: f(x)=3x-2, and g(x)=x^2+1

A) In order to evaluate what f(g(-1)) is, let's first investigate what g(-1) is using the definition for this function:

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B) In order to evaluate what g(f(3)) is, let's first investigate what f(3) is using the definition for this function:

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