I've been writing down the questions that I missed from several practice tests I've taken. They do not have explanations, so knowing the right answer does nothing for me if I don't know how to arrive at that answer! There is nine in total, so any help would be greatly appreciated 
Data sufficiency Questions
Are x and y both positive?
1 - 2x-2y + 1
2 - x/y > 1
In Isosceles Triangle RST what is the measure of <R
1 - Measure of <T is 100
2 - Measure of <S is 40
Ratio of number of women to men attending an event is 5 to 2. What was the number of men that attended?
1- Ratio of children to men is 5 to 11
2 - The number of women is less than 30
(1/5)^m(1/4)^18 = 1/2(10)^35
m = ?
Choices: 17, 18, 34, 35, 36
If n is a positive integer and the product of all integers from 1 to n, inclusive is a multiple of 990, what is the least possible value of n?
Choices: 10,11,12,13,14
In the figure a square is inscribed in a circle. If the area of the square is 16 what is the area of the circular region?
2π, 4 π, 8 π, 12 π, 16 π
If 0 < x < 1, what is the median of the values x, x -1, x2, Square root (x), x3
For which iof the following functions is f(a+b) = f(a) + f(b) for all positive numbers a and b?
F(x) = x2
F(x) = x + 1
F(x) = square root (x)
F(x) = 2/x
F(x) = -3x
Susan drove an average of 30 miles per house for the first 30 miles of her trip and then an average of 60 miles per her for the remaining 30 miles of her tirp. If she made no stops, what was the average speed of her trip?
35, 40, 45, 50, 55
Data sufficiency Questions
Are x and y both positive?
1 - 2x-2y + 1
2 - x/y > 1
In Isosceles Triangle RST what is the measure of <R
1 - Measure of <T is 100
2 - Measure of <S is 40
Ratio of number of women to men attending an event is 5 to 2. What was the number of men that attended?
1- Ratio of children to men is 5 to 11
2 - The number of women is less than 30
(1/5)^m(1/4)^18 = 1/2(10)^35
m = ?
Choices: 17, 18, 34, 35, 36
If n is a positive integer and the product of all integers from 1 to n, inclusive is a multiple of 990, what is the least possible value of n?
Choices: 10,11,12,13,14
In the figure a square is inscribed in a circle. If the area of the square is 16 what is the area of the circular region?
2π, 4 π, 8 π, 12 π, 16 π
If 0 < x < 1, what is the median of the values x, x -1, x2, Square root (x), x3
For which iof the following functions is f(a+b) = f(a) + f(b) for all positive numbers a and b?
F(x) = x2
F(x) = x + 1
F(x) = square root (x)
F(x) = 2/x
F(x) = -3x
Susan drove an average of 30 miles per house for the first 30 miles of her trip and then an average of 60 miles per her for the remaining 30 miles of her tirp. If she made no stops, what was the average speed of her trip?
35, 40, 45, 50, 55
