Given:
CDEF is a rhombus.
To find:
The value of x.
Solution:
We know that the diagonals of a rhombus are angle bisectors because they bisect each vertex angle.



Divide both sides by -3.


Therefore, the value of x is 7.
Answer:
Option B - The income earned in one month is $5.50.
Step-by-step explanation:
Given : At River Bank, checking account customers earn 0.75% interest a month on their account balances, pay no service fees for writing checks, and pay a monthly $2.00 financial charge.
To find : The income earned in one month on the checking account for a customer with an account balance of $1,000.
Solution :
Account balance of customer= $ 1,000
Interest earned in checking account= 0.75%
Financial charge= $2.00
Therefore, Income earned in one month on the checking account is given by 0.75% of 1,000 - $2
i.e, 



So, Option B is correct.
The income earned in one month is $5.50.
Answer:
the domain of a graph consists of all the input values shown on the x-axis. The range is the set of possible output values, which are shown on the y-axis
The classification would be a right triangle