Given f(x) = 3x + 1, solve for x when f(x) = 7.
2 answers:
Answer:
f(7) = 22 or x =2
Step-by-step explanation:
- f(x) = 3x + 1
- f(7) = 3(7) + 1
- f(7) = 21 + 1
- f(7) = 22
<u>Or if the equation meant it like this:</u>
- f(x) = 3x + 1
- 7 = 3x + 1
- 6 = 3x
- 2 = x
Answer:
f(7) = 22
Step-by-step explanation:
1. f(x) = 3x + 1
2. f(7) = 3(7) + 1
3. f(7) = 21 + 1
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Step-by-step explanation:
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Answer:
21 minutes
Step-by-step explanation:
30%=9
10%=3
100%-30%=70%
7×10%=70%
3x7=21
=21minutes
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