For each problem, define a variable, write an equa 1. AGE Walter lived 2 years longer than his brother Martin. Walter was 79 at the time of his death. What was Martin's age at the time of his death? 2. ROBOTS The smallest robot can travel 20 inches per minute through a pipe. How long will it take this robot to travel through 10 feet of pipe? 3. GEOMETRY Two angles are supplementary if the sum of their measures is 180. Angles A and B are supplementary. If the measure of angle A is 78, find the measure of angle B. 4. WEATHER After the temperature had risen 12F, the temperature was 7F. Find the initial temperature. 180 m2A=78 7" 5. EXERCISE Jasmine jogs 3 miles each day. How many days it will take her to jog 57 miles? 6. AGE The product of Bart's age and 26 is 338. Find Bart's age. 7. POPULATION The population of a small town is increasing at a rate of 325 people per year. How long it will take the population to ncrease by 6,825? 8. POPULATION In 2005, the population of Honduras is the population of Haiti decreased by 832,598. The population of Honduras is 6,823,568. Find the population of Haiti.