A sailboat begins an voyage with 145lb of food. The crew plans to eat a total of 15 lb of food per day.
A. Write an equation in the slope-intercept from relating the remaining food supply y to the number of days x.
C. The crew plans to have 25 lb of food remaining when they end their voyage. How many days does the crew expect their voyage to last?

Question

A sailboat begins an voyage with 145lb of food. The crew plans to eat a total of 15 lb of food per day. 
A. Write an equation in the slope-intercept from relating the remaining food supply y to the number of days x.
C. The crew plans to have 25 lb of food remaining when they end their voyage. How many days does the crew expect their voyage to last?

anonymous · Answer

y=-15x+145....y intercept is 145 and rate of loss of food is -15 per day
now suppose voyage lasts p days.....then after p days the food remaining will be 25
so 25=-15x+145....x=8