Write an equation in slope-intercept form for the line with slope 1/2 and y-intercept -9

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Find the zeros of each function. f(x) = x^2 + 5x - 6

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?