Sub 505 (Easy)
For all numbers s and t, the operation * is defined by s*t = (s - 1)(t + 1). If (-2)*x = -12, then x =
505-555 (Easy)
If the number n of calculators sold per week varies with the price p in dollars according to the equation n = 300 - 20p, what would be the total weekly revenue from the sale of $10 calculators?
505-555 (Easy)
If x â 2 , then 3 x 2 (x â 2) â x + 2 x â 2
Sub 505 (Easy)
If x > 3,000, then the value of x/(2x + 1) is closest to
Sub 505 (Easy)
(1 + 5 â) (1 â 5 â) = (1 + 5) (1 â 5) =
505-555 (Easy)
If x and y are different integers and x^2 = xy, which of the following must be true?
I. x = 0
II. y = 0
III. x = -y
555-605 (Medium)
If k â 0 and k â 3 â 2 k 2 k = x k , then x =
Sub 505 (Easy)
If (b - 3)(4 + 2/b) = 0 and b â 3, then b =
555-605 (Medium)
If b < 2 and 2x - 3b = 0, which of the following must be true?
Sub 505 (Easy)
The number 2 - 0.5 is how many times the number 1 - 0.5?
505-555 (Easy)
What is the value of 2 x 2 â 2.4 x â 1.7 for x = 0.7 ?
505-555 (Easy)
If x + y x y = 1 , then y =
Sub 505 (Easy)
Which of the following Equation is NOT equivalent to 25x^2 = y^2 - 4?
555-605 (Medium)
Which of the following equations has a root in common with x 2 â 6 x + 5 = 0 ?
Sub 505 (Easy)
If x y = 2 3 , then x â y x ?
555-605 (Medium)
If y = (x â 5) 2 + (x + 1) 2 â 6 , then y is least when x =
Sub 505 (Easy)
If 3/x = 2 and y/4 = 3, then (3 + y)/(x + 4) =
Sub 505 (Easy)
If -3 is 6 more than x, what is the value of x/3?
505-555 (Easy)
If x = (0.08) 2 , y = 1 (0.08) 2 and z = (1 â 0.08) 2 â 1 , which of the following is true?
Sub 505 (Easy)
On the number line, if r < s, if p is halfway between r and s, and if t is halfway between p and r, then (s - t)/(t - r) =