In a predatory/prey model, the population of a predator is modeled by the function y=900cos(2π3x+8000y=900cos(2π3x+800 0

where x is measured in years. After how many years will the population reach 7,100?

Select the correct answer. employee earnings per month($) 1 1,200 2 2,600 3 1,800 4 1,450 5 3,500 6 2,800 7 12,500 8 3,200 which measure of spread is best for the data in the table? a. range b. quartiles c. interquartile range d. mean absolute deviation