(08.05, 8.06 MC) Part A: The area of a square is (25x2 - 40x + 16) square units. Determine the length of
each side of the square by factoring the area expression completely. Show your work. (5
points)
Part B: The area of a rectangle is (81x2 - 116) square units. Determine the dimensions of
the rectangle by factoring the area expression completely. Show your work. (5 points)
(10 points)

Part A: 25x^2-40x+16=(5x-4)^2 because it is in the form of a^2-2ab+b^2 so you know it's a square for sure. So just find the square root of the first and last term to make the equation.

Part B:  (81x^2-116)=(9x-)(9x-)

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.