Find the values of x, y, and z for which abcd must be a parallelogram.

What is the value of the expression below? (81^2)^1/8

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?

What number line represents the solution set for the inequality -1/2 greater than or equal to 4