To solve this equation, repeatedly do the same thing to both sides of the equation until the variable is isolated on one side of the equal sign and the answer on the other.

-8b - 2 = -1 - 5b
-8b = -1 - 5b + 2
-8b + 5b = -1 + 2
-3b = 1
b = \( \frac{1}{-3} \)
b = -\(\frac{1}{3}\)

The surface area of a cube is (2 x length x width) + (2 x width x height) + (2 x length x height):

sa = 2lw + 2wh + 2lh
sa = (2 x 1 x 9) + (2 x 9 x 2) + (2 x 1 x 2)
sa = (18) + (36) + (4)
sa = 58

The area of a trapezoid is one-half the sum of the lengths of the parallel sides multiplied by the height:

a = ½(b + d)(h)
a = ½(7 + 3)(3)
a = ½(10)(3)
a = ½(30) = \( \frac{30}{2} \)
a = 15

According to the Pythagorean theorem, the hypotenuse squared is equal to the sum of the two perpendicular sides squared:

c² = a² + b²
c² = 5² + 8²
c² = 25 + 64
c² = 89
c = \( \sqrt{89} \)

The area of a triangle is equal to ½ base x height:

a = ½bh
a = ½ x 1 x 4 = \( \frac{4}{2} \) = 2