Martez wants to buy the latest Playstation 5 game that costs $61.09. How much change does he receive if he gives the cashier $65? Write your equation and write your answer as a complete sentence. Justify your answer.

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.

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

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?