The bird population on an island is declining at a rate of 4% per year. the population was 2700 in the year 2015.
which answer is the best prediction of the population in the year 2020? use the formula b(1−r)t
a. 1847
b. 2035
c. 2202
d. 3285

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?