Since they spend 800 plus 10 dollar per cake, they want to make more than that, and each cake sells for 15 dollars, which means the total amount of money made from cakes has to add up to MORE than what they spend to maintain the business.
1. If y<span>ou have jogged 5 miles from the park at a rate of r miles per hour, then the time you need to do this is hours (, where S is distance, v-speed and t-time). </span> 2. W<span>hen you run back to the park, your average speed increases by 1 mph and become r+1 mph. </span> 3. I<span>t takes hours to jog 5 miles back to the park</span>
4. T<span>he total jogging time T is hours.</span> <span /> 5. If you jogged away from the park at an average speed of 4 miles per hour, then r+1=4 and r=3. The expression will take look <span>hours.</span>