If x and y are positive, is xy > x + y ?

(1) x < y

(2) 2 < x

If Ann saves x dollars each week and Beth saves y dollars each week, what is the total amount that they save per week?

(1) Beth saves $5 more per week than Ann saves per week.

(2) It takes Ann 6 weeks to save the same amount that Beth saves in 5 weeks.

A retailer purchased a television set for x percent less than its list price, and then sold it for y percent less than its list price. What was the list price of the television set?

(1) x = 15

(2) x − y = 5

. Is k + m < 0 ?

(1) k < 0

(2) km > 0

For all x, the expression x* is defined to be ax + a, where a is a constant. What is the value of 2* ?

(1) 3* = 2

(2) 5* = 3

Is the positive integer n odd?

(1) n² + (n + 1)²+ (n + 2)² is even.

(2) n² − (n + 1)² − (n + 2)² is even.

What is the value of ~$r \over 2$~+~$s \over 2$~ ?

(1)~$r+s \over 2$~=5

(2) r + s = 10

What is the average (arithmetic mean) of x and y ?

(1) The average of x and 2y is 10.

(2) The average of 2x and 7y is 32.

If y is greater than 110 percent of x, is y greater than 75 ?

(1) x > 75

(2) y − x = 10

In the rectangular coordinate system above, if ΔOPQ and ΔQRS have equal area, what are the coordinates of point R ?

(1) The coordinates of point P are (0,12).

(2) OP = OQ and QS = RS.