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5 votes
If f(x) = −4x 2 + 15, then f(−3)

User BigMike
by
3.2k points

2 Answers

4 votes

Answer:

-21

Explanation:

f(-3) = -4(-3)² + 15 = -4(9) + 15 = -36 + 15 = -21

User Alexis Zapata
by
3.6k points
3 votes

Answer:

f(-3) = -21

Explanation:

f(x) = −4x²+ 15

f(-3) = -4(-3)² + 15

f(-3) = -4(9) + 15

f(-3) = -36 + 15

f(-3) = -21

User Supershabam
by
4.0k points