QCEVault

Exponential functions — Question 207

Original QCE Vault practice · 1 mark

Q207 · Practice questionTechnology-freeSimple familiar1 mark

QUESTION 207

If 3e0.2t=123e^{0.2t}=12, then tt equals
(A)
5ln⁡45 \ln 4
(B)
0.2ln⁡40.2 \ln 4
(C)
ln⁡123\frac{\ln 12}{3}
(D)
ln⁡45\frac{\ln 4}{5}
Question linkSyllabus coverage

Related questions

  1. Q220 · Original practice · 1 mark
    The solution of 7e0.3t=217e^{0.3t}=21 is
    Exponential functions
  2. Q230 · Original practice · 4 marks
    A medication concentration is modelled by C(t)=18e−0.22tmgL−1C(t)=18e^{-0.22t} mg L^{-1} for t≥0t\ge 0.
    Exponential functions