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Grace [21]
3 years ago
11

Given that f(x) = 2x + 1 and g(x) = −5x + 2, solve for f(g(x)) when x = 3.

Mathematics
2 answers:
kobusy [5.1K]3 years ago
5 0

Answer with Step-by-step explanation:

We are given that:

f(x) = 2x + 1 and g(x) = −5x + 2

We have to find f(g(x))

f(g(x))= f(-5x+2)

        = 2(-5x+2) +1

        = -10x+4+1

        = -10x+5

When, x=3

f(g(3))= -10×3+5

        = -30+5

       = -25

Hence, value of f(g(x)) when x=3 is:

-25

Anon25 [30]3 years ago
3 0
The first step in solving for f(g(x)) when x=3, is solve for g(x). The answer of g(x) when x is equal to 3 is -(5) multiplied by 3 add by 2. Therefore, g(x) is -13. Then substitute the value of g(x) to f(x). The answer of f(-13) is 2 multiplied by -13, then add 1. So, the final answer is, f(x)=-25.
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Step-by-step explanation:

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5 0
3 years ago
The function h(t) = -16t^2 + 16t represents the height (in feet) of a horse (t) seconds after it jumps during a steeplechase.
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When the horse reaches its maximum height, its position on h(t) will be at the top of the parabola. The slope at this point will be zero because the line tangent to the peak of a parabola is a horizontal line. By setting h'(t) equal to 0, we can find the critical numbers which will be the maximum and minimum t values.

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