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Penjelasan dengan langkah-langkah:

no. 1

f(x) = 3. 4ˣ⁺⁶

f(-4) = 3. 4⁻⁴⁺⁶

f(-4) = 3. 4²

f(-4) = 3. (16)

f(-4) = 48

jawabannya : b

no. 3

11ˣ⁺³ = 121ˣ⁻²

11ˣ⁺³ = (11²)ˣ⁻²

11ˣ⁺³ = 11²ˣ⁻⁴

x + 3 = 2x – 4

2x – x = 3 + 4

x = 7

jawabannya : a