|x-5| = 9
x - 5 = 9
x = 14
-(x-5) = 9
-x + 5 = 9
-x = 4
x = -4
answer is B
{-4, 14)
The lateral surface area excludes the top and bottom, the <em>bases </em>as they're referred to here. So we have the 9×5 front and back, and the 9×6 left and right sides.
Lateral Area = 9×5 + 9×5 + 9×6 + 9×6 = 9×(5+5+6+6) = 9×22 = 198
Answer: 198 square inches
Just remember that something outside the parentheses applies to everything inside.
Examples:
3 times (x + 2) . . . . . means . . . . . 3 times 'x' <u>plus</u> 3 times 2
a (b + c) . . . . . means . . . . . ab <u>plus</u> ac
4 (w + x + y + 2) . . . means . . . 4w + 4x + 4y + 8
When somebody gives you an equation that has parentheses in it,
the first thing you're always supposed to do is get rid of them.
With the examples I just gave you, you know how to do that now.
