Answer:
17
2(f) + 4(f) + 2 - 3 | (f) = 3
2(3) + 4(f) + 2 - 3
(6 + 12) + (2 - 3)
(18) - (1)
Explanation:
given
2f + 4f + 2 - 3 ← simplify by collecting like terms
= 6f - 1 ← substitute f = 3 into the expression
= (6 × 3) - 1 = 18 - 1 = 17
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