Algebra

If 3 - x = 2x - 3, then 4x =

Of the following, which one is third greatest?

If a = 7 and b = − 7 , what is the value of 2 a − 2 b + b 2 ?

A certain pair of used shoes can be repaired for $12.50andwilllastfor1year.Apairofthesamekindofshoescanbepurchasednewfor$28.00 and will last for 2 years. The average cost per year of the new shoes is what percent greater than the cost of repairing the used shoes?

If a b = 2 3 which of the following is not true ?

If n is a positive integer and k + 2 = 3^n, which of the following could NOT be a value of k ?

(3 √ + 2) (3 √ − 2) = (3 + 2) (3 − 2) =

If x = -(2 - 5), then x =

If x = -1, then -(x^4 + x^3 + x^2 + x) =

If x is a number such that x 2 − 3 x + 2 = 0 and x 2 − x − 2 = 0 , what is the value of x ?

If one root of the equation 2x^2 + 3x – k = 0 is 6, what is the value of k?

If p = 0.2 and n = 100, then p (1 − p) n − − − √ p (1 − p) n =

If 2x + 5y =8 and 3x = 2y, what is the value of 2x + y?

If x ≠ 0, 2x = 5y, and 3z = 7x, what is the ratio of z to y?

If (a + b) = 4, and ab = 7/4, what is the value of a^2 – b^2?

If r ☉ s = r s + r + s , then for what value of s is r ☉ s equal to r for all values of r ?

If x and y are integers and x y = 5 , then (x + y) 2 =

If x ≠ 3 and (x 2 − 9) 2 y = (x − 3) 4 , then in terms of y , x = ?

x 2 − (x 2) 2 =

If x y = 2 , then (x − y) y =