Question

f left parenthesis x right parenthesis equals 7 minus 2 x
​(a) f left parenthesis negative 9 right parenthesis   ​(b)​ f(0)  ​(c)​ f(5​)
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Part 1
left parenthesis a right parenthesis f left parenthesis negative 9 right parenthesisequals
  
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Part 2
left parenthesis b right parenthesis ​f(0)equals
  
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Answer 1

f(x) = 7 − 2x.

(b) f(0) = 7 − 2·0 = 7.

(If you also need (c): f(5) = 7 − 2·5 = −3.)