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rodikova [14]
3 years ago
6

I have this weird question that has to do with linear equations (I think), and this is what it says. Let f(x) = 4x - 5 A. Find f

(3) B. Find x when f(x) = -21 Can somebody help me understand this ? ?
Mathematics
1 answer:
hjlf3 years ago
7 0
f(3)=4\cdot3-5=12-5=7\\\\
4x-5=-21\\
4x=-16\\
x=-4
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