It says write an equation of the line shown and the line goes through points 4,3 and 1,-3

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

In 2009, there were 1570 bears in a wildlife refuge. in 2010, the population had increased to approximately 1884 bears. if this trend continues and the bear population is increasing exponentially, how many bears will there be in 2018?

If you eat 4 medium strawberries, you get 48% of your daily recommenced amount of vitamin c. what fraction of your daily amount of vitamin c do you still need?