Evaluate the function f(x) = -3x² – 20
Find f(-9)​

f(-9) = -263

Step-by-step explanation:

Find f(-9) by plugging in -9 into the function, and simplifying it:

f(x) = -3x² - 20

f(-9) = -3(-9)² - 20

f(-9) = -3(81) - 20

f(-9) = -243 - 20

f(-9) = -263

So, the answer is f(-9) = -263

47 - 90 = 43

43 - 180 = x

x = 137

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