You might keep your money in a bank, but have you heard of a time bank? This online service allows users to trade

services with one

another without exchanging money. For example, a hairdresser gives

someone a haircut for one hour of credit in the time bank. The

hairdresser could then use that credit to have a plumber come work for

her for an hour. Time banks are useful for people who can't arrange

direct trades. The plumber might not want a haircut, but he can work

for the hairdresser and earn credit to use with someone else.

How does the detail "The plumber might not want a haircut, but he can work

for the hairdresser and earn credit to use with someone else" best support

the central idea that time banks are a convenient way to get things done?

Explanation:

Of course, the plumber might not want a haircut, but he might have a wife, a fiancee, or a sister who may need the services of a hairdresser so working for the hairdresser would earn him credit that can be used by any of these people. So in a sense, he is getting things done for others.

Therefore, the time-bank service solves a problem by allowing people to receive services without exchanging money.

first one is a: renaming a fraction. second one is c: de-c

step-by-step explanation:

my explanation is that these were the answers on edg : )

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.