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Given the function ƒ(x) = 3x + 5, find ƒ(4) and x such that ƒ(x) = 38. A. 17; 11 B. 20; 13 C. 12; 15 D. 24; 9

Given the function ƒ(x) = 3x + 5, find ƒ(4) and x such that ƒ(x) = 38. A. 17; 11 B. 20; 13 C. 12; 15 D. 24; 9
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Given the function ƒ(x) = 3x + 5, find ƒ(4) and x such that ƒ(x) = 38.

A. 17; 11
B. 20; 13
C. 12; 15
D. 24; 9

User Fycth
by
8.4k points

1 Answer

5 votes
The answer is A, just plug 4 inside f(x)= 3(4)+5= 17
3x+5=38
3x=33
Divid by 3 both side
X=11
User Eric Gopak
by
8.4k points
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