Could i please get some help finding the mid point?

Find the value of the cosine for angle a

Brent works part-time at a clothing store. he earns an hourly wage of $15. if he needs to earn more than $45 in a day and works for x hours a day, which inequality represents this situation? a. 15x > 45 b. 15x < 60 c. x > 60 d. 15x < 45 e. x < 60

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?