What is the slope of f(x)=500-30(x)

The price of a particular stock is represented by the linear equation , where x represents the number of weeks the stock has been owned and y represents the price of the stock, in dollars. if this relationship continues, what is the price of the stock after it has been owned for 12 weeks? $92.55 $94.37 $100.52 $114.39

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle