The right answer is √47
all the others are perfect squares
If a = 6l^2 is the total area of the surface of a cube with sides l length and A = 6 (2l)^2 is that area with 2l sides, then we take the ratio A/a = 6 (2l)^2/(6 l^2) = (2l)^2/l^2 = 4l^2/l^2 = 4. So that A = 4a. And that explicitly shows that the area A with 2l for sides is 4 X a, where a is the area when l is the side length.
<span>Using ratios to compare values of the same thing is the smart way to solve this kind of problem, because many of the values, like the 6 in both, cancel out. In fact, because we found that A/a = (2l/l)^2 we say in general that the area of a cube varies with the square of the length of its side.
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First, lets work out how much Shawn paid in fees.
$545 + $2100 + $695 = $3340
This means after fees, Shawn has $3095 left.
A point means 1% of the mortgage. After fees, Shawn paid $3095 for 2 points or 2% of the mortgage. So, 3095 / 2 = 1547.5, meaning 1547.5 is 1% of the mortgage.
After finding that, we need only multiply that by 100 to find the total cost of the house. 1547.5 * 100 = 154750. Meaning the correct answer is D.
I dont know, im working it out now, or im trying to
