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lakkis [162]
3 years ago
9

Using the function f(x)=-x^2+8x-13 find f(4)

Mathematics
2 answers:
guapka [62]3 years ago
7 0

Answer:

f(4) = 3

Step-by-step explanation:

f(x) = -x^{2} + 8x - 13

To find f(4), substitute 4 for all instances of x:

f(4) = -(4)^{2} + 8(4) - 13

Simplify the exponent:

f(4) = -16 + 8(4) - 13

Multiply:

f(4) = -16 + 32 - 13

Combine terms:

f(4) = 3

sesenic [268]3 years ago
4 0

Answer:

3

Step-by-step explanation:

You plug in 4.

f(4)= -(4)^2+8(4)-13

f(4)= -16+32-13

f(4)= 16-13

f(4)=3

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