An ellipse and a hyperbola have the same foci, $a$ and $b$, and intersect at four points. the ellipse has major axis 50, and minor axis 40. the hyperbola has conjugate axis of length 20. let $p$ be a point on both the hyperbola and ellipse. what is $pa \cdot pb$?

Hi, can anyone show me how to do this problem? 100 points for this. in advance

Juanita wade's new car has an msrp of $28,902.11 including title and processing fees. the premier package which includes surround sound and dvd player costs three times the amount of the in-style package which includes leather seats and select wheels. the total cost of her new car was $34,290.08 which included the 6.5% sales tax. find the cost of the premier package to the nearest cent.

Jared had 3/7 of the minutes on a family phone plan remaining for the month. the plan is shared by 2 people. if divided equally what portion of the minutes remaining on the phone plan would be avalible for each person