This document asks to: 1) Write the likelihood function L in simplified form for a random sample from an exponential distribution over the interval [0,10]; 2) Write the log-likelihood ln(L) in simplified form; 3) Find the maximum likelihood estimate (MLE) of the parameter by taking the derivative of ln(L) and setting it equal to 0; 4) Given a sample, calculate the numerical value of the MLE of the first quartile Q1 of the distribution.