Math 112 Written Homework 3: Linear Student Name: Math 112 Section: Directions: Work out these problems on scratch paper first, then write your final answers by hand on these pages. Show all work, and answer each question that is asked. Explanations should be given in complete sentences. All graphs should be drawn accurately on this sheet, and be tlly labeled. Staple all pages together. 1. A solar water heater costs about $6240 to install (after rebates). A traditional gas water heater costs about $850, and costs about $320 per year to run. The average annual cost to run the solar water heater is about $75. a. Create total cost functions for each of the water heaters as a function of the number of years that the heater is used