555-605 (Medium)
If 0.0015 * 10 m 0.03 * 10 k = 5 * 10 7 , then m - k =
Sub 505 (Easy)
If x = 1- 3t and y = 2t - 1, then for what value of t does x = y?
Sub 505 (Easy)
If 1 + 1/x = 2 - 2/x, then x =
505-555 (Easy)
As x increases from 165 to 166, which of the following must increase?
I. 2x - 5
II. 1 - 1/x
III. 1/(x^2 - x)
505-555 (Easy)
If (x - 1)^2 = 400, which of the following could be the value of x - 5?
505-555 (Easy)
If n is positive, which of the following is equal to 1 â n + 1 â â n 1 n + 1 â â â â n â
705-805 (Hard)
If x, y, and k are positive numbers such that x x + y * 10 + y x + y * 20 = k and if x < y, which of the following could be the value of k?
555-605 (Medium)
If s is the product of the integers from 100 to 200 inclusive, and if t is the product of the integers from 100 to 201 inclusive, what is 1/s + 1/t in terms of t?
Sub 505 (Easy)
If the operation @ is defined for all a and b by the equation a @ b = a 2 * b 3 , then 2 @ (3 @ â 1) =
Sub 505 (Easy)
If x = -3, what is the value of -3x^2 ?
505-555 (Easy)
If x + y = a and x - y = b, then 2xy = ?
Sub 505 (Easy)
If the sum of 5, 8, 12, and 15 is equal to the sum of 3, 4, x, and x + 3, what is the value of x ?
Sub 505 (Easy)
(7 â + 7 â) 2 (7 + 7) 2
Sub 505 (Easy)
If 1 2 + 1 3 + 1 4 = 13 x , which of the following must be an integer? I. x 8 II. x 12 III. x 24
Sub 505 (Easy)
(2 â + 1) (2 â â 1) (3 â + 1) (3 â â 1) = (2 + 1) (2 â 1) (3 + 1) (3 â 1) =
Sub 505 (Easy)
If x^2 = 2y^3 and 2y = 4, what is the value of x^2 + y?
Sub 505 (Easy)
If 4x + 3y = -2 and 3x + 6 = 0, what is the value of y?
Sub 505 (Easy)
If x + 5y = 16 and x = -3y, then y =
Sub 505 (Easy)
If y= 4 + (x - 3)^2, then y is lowest when x =
Sub 505 (Easy)
y = 248 - 398x
Which of the following values of x gives the greatest value of y in the equation above?