You and your friend rent a canoe. The canoe costs 10 dollars per half hour plus 5 dollars per day for each life vest. Life vests are required for each passenger. Canoes can only be rented after 8 a. m and must be returned by 6 p. m. What is the greatest range value for this situation

The greatest range ... the range is ur y value, it will be the total cost ... the x is gonna be the number of 1/2 hrs. And the 5 per life vest has to be multiplied by 2 because there is 2 people, making it 10

y = 10x + 10

the greatest range will be when u rent the canoe for the longest.

8 a. m to 6 p. m ... thats 10 hrs ... 20 half hrs ... so the greatest range is when u rent the canoe for 20 half hrs.

y = 10 (20) + 10

y = 200 + 10

y = 210 < = = = the greatest range