What is the correct form of the partial fraction decomposition for the expression 7x+18/x^2+9x

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

If value of cos330° is √3/2 then find tan165°.