The number of cable tv systems recently decreased from 11,300 to 11,000. find the percent decrease.
the percent decrease was
% (round to the nearest tenth, if needed.)

a negative exponent is translated as follows:

so, we have

given the equation is 8+9z=-6, the first step would be to subtract the 8 from both sides:

8+9z-8=-6-8

since 8 minus 8 = 0, this would cancel out the 8. and since -6 minus 8 equals -14, the equation would look like this

9z = -14

5 feet of chain cost $9

so the answer is 1.80