Let a = {x, y, z}, b = {y, z, w}, c = {y, z, v}. which of following is correct?
a)
(a ? b) ? ( a ? c) = a ? (b ? c)
b)
(a ? b) ? (a ? c) = {y, z}

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.

Which problem would you use the following proportion to solve for? 24/x = 40/100 a. what is 40% of 24? b. what percent is 24 of 40? c. twenty-four is 40% of what number? d. forty percent of 24 is what number?

Which number completes the system of linear inequalities represented by the graph? y > 2x – 2 and x + 4y >